{"id":509,"date":"2021-09-22T13:36:31","date_gmt":"2021-09-22T13:36:31","guid":{"rendered":"https:\/\/www.nplindia.org\/?page_id=509"},"modified":"2025-08-18T07:55:08","modified_gmt":"2025-08-18T07:55:08","slug":"physico-mechanical-metrology","status":"publish","type":"page","link":"https:\/\/www.nplindia.in\/index.php\/science-technology\/physico-mechanical-metrology\/","title":{"rendered":"Physico-Mechanical Metrology"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"509\" class=\"elementor elementor-509\">\n\t\t\t\t\t\t<section class=\"has_eae_slider has_ma_el_bg_slider elementor-section elementor-top-section elementor-element elementor-element-4b5af7c elementor-section-full_width elementor-section-height-default elementor-section-height-default jltma-glass-effect-no\" data-eae-slider=\"16845\" data-id=\"4b5af7c\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"has_eae_slider has_ma_el_bg_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-236960d jltma-glass-effect-no\" data-eae-slider=\"10458\" data-id=\"236960d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e879830 jltma-glass-effect-no elementor-widget elementor-widget-shortcode\" data-id=\"e879830\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"13197\" class=\"elementor elementor-13197\">\n\t\t\t\t\t\t<section class=\"has_eae_slider has_ma_el_bg_slider elementor-section elementor-top-section elementor-element elementor-element-6eee7c7 elementor-section-full_width elementor-section-height-default elementor-section-height-default jltma-glass-effect-no\" data-eae-slider=\"73777\" data-id=\"6eee7c7\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"has_eae_slider has_ma_el_bg_slider elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-8b75a1a jltma-glass-effect-no\" data-eae-slider=\"31636\" data-id=\"8b75a1a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3ac131a elementor-widget-tablet__width-auto elementor-widget-mobile__width-auto jltma-glass-effect-no elementor-widget elementor-widget-image\" data-id=\"3ac131a\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.nplindia.in\/wp-content\/uploads\/2023\/01\/CSIR-removebg-preview-150x150.png\" class=\"attachment-thumbnail size-thumbnail wp-image-24151\" alt=\"\" srcset=\"https:\/\/www.nplindia.in\/wp-content\/uploads\/2023\/01\/CSIR-removebg-preview-150x150.png 150w, https:\/\/www.nplindia.in\/wp-content\/uploads\/2023\/01\/CSIR-removebg-preview-300x300.png 300w, https:\/\/www.nplindia.in\/wp-content\/uploads\/2023\/01\/CSIR-removebg-preview.png 500w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"has_eae_slider has_ma_el_bg_slider elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-9e41c9f jltma-glass-effect-no\" data-eae-slider=\"71797\" data-id=\"9e41c9f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-21388ae jltma-glass-effect-no elementor-widget elementor-widget-text-editor\" data-id=\"21388ae\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center; font-size: 43px; font-family: Arial Rounded MT Bold;\"><span style=\"color: #ffffff;\">\u0938\u0940\u090f\u0938\u0906\u0908\u0906\u0930-\u0930\u093e\u0937\u094d\u091f\u094d\u0930\u0940\u092f \u092d\u094c\u0924\u093f\u0915 \u092a\u094d\u0930\u092f\u094b\u0917\u0936\u093e\u0932\u093e<\/span><\/p><p style=\"text-align: center; font-size: 40px; font-family: Cooper Black;\"><span style=\"color: #ffffff;\"><span style=\"text-decoration: none;\">CSIR-National Physical Laborator<\/span>y<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"has_eae_slider has_ma_el_bg_slider elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-2044372 jltma-glass-effect-no\" data-eae-slider=\"73415\" data-id=\"2044372\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-eb96210 jltma-glass-effect-no elementor-widget elementor-widget-image\" data-id=\"eb96210\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.nplindia.in\/wp-content\/uploads\/2021\/12\/npl-1-150x150.png\" class=\"attachment-thumbnail size-thumbnail wp-image-39141\" alt=\"\" srcset=\"https:\/\/www.nplindia.in\/wp-content\/uploads\/2021\/12\/npl-1-150x150.png 150w, https:\/\/www.nplindia.in\/wp-content\/uploads\/2021\/12\/npl-1.png 200w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"has_eae_slider has_ma_el_bg_slider elementor-section elementor-top-section elementor-element elementor-element-d1b12a8 elementor-section-full_width elementor-section-height-default elementor-section-height-default jltma-glass-effect-no\" data-eae-slider=\"25015\" data-id=\"d1b12a8\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"has_eae_slider has_ma_el_bg_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-16c805f jltma-glass-effect-no\" data-eae-slider=\"32479\" data-id=\"16c805f\" data-element_type=\"column\" 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Scientists Forum<\/a><\/li>\n\t<li id=\"menu-item-9958\" class=\"menu-item menu-item-type-post_type menu-item-object-page hfe-creative-menu\"><a href=\"https:\/\/www.nplindia.in\/index.php\/important-links\/downloads\/\" class = \"hfe-sub-menu-item\">Downloads<\/a><\/li>\n<\/ul>\n<\/li>\n<li id=\"menu-item-781\" class=\"menu-item menu-item-type-post_type menu-item-object-page parent hfe-creative-menu\"><a href=\"https:\/\/www.nplindia.in\/index.php\/administration\/\" class = \"hfe-menu-item\">Administration<\/a><\/li>\n<\/ul> \n\t\t\t\t<\/nav>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"has_eae_slider has_ma_el_bg_slider elementor-section elementor-top-section elementor-element elementor-element-b2fce9b elementor-section-boxed elementor-section-height-default elementor-section-height-default jltma-glass-effect-no\" data-eae-slider=\"69163\" data-id=\"b2fce9b\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"has_eae_slider has_ma_el_bg_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-875892b jltma-glass-effect-no\" data-eae-slider=\"77524\" data-id=\"875892b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2f3da7c jltma-glass-effect-no elementor-widget elementor-widget-heading\" data-id=\"2f3da7c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-large\">Physico-Mechanical Metrology<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"has_eae_slider has_ma_el_bg_slider elementor-section elementor-top-section elementor-element elementor-element-d0c5b89 elementor-section-boxed elementor-section-height-default elementor-section-height-default jltma-glass-effect-no\" data-eae-slider=\"19485\" data-id=\"d0c5b89\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"has_eae_slider has_ma_el_bg_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-cc53c49 jltma-glass-effect-no\" data-eae-slider=\"15700\" data-id=\"cc53c49\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d78db79 jltma-glass-effect-no elementor-widget elementor-widget-accordion\" data-id=\"d78db79\" data-element_type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-2261\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-2261\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">About<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-2261\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-2261\"><p style=\"text-align: justify;\">CSIR-National Physical Laboratory (NPL-India) is mandated to be India&#8217;s \u201cNational Measurement Institute\u201d (NMI) by an act of Parliament and its associated rules for legal metrology. CSIR-NPL is the custodian of \u201cNational Standards\u201d with a responsibility of realization, establishment, up gradation, maintenance and dissemination of standards at par to international level through R and D and latest technology. CSIR-NPL&#8217;s National Metrology has not only championed in its primary mandate as the custodian of Measurement Standards for the nation but also served the Indian industry, academia and strategic sectors to excel in their endeavors.<\/p><p style=\"text-align: justify;\">CSIR-NPL maintains international equivalence of its standards by way of Inter-comparison. It represents India in CIPM &#8211; Mutual Recognition Arrangement of NMIs. It maintains a quality system in accordance with ISO- IEC 17025:2005 and its calibration and measurement capabilities (CMCs) are peer reviewed by international experts for mutual recognition. These CMCs are displayed in Appendix C of MRA at\u00a0\u00a0<a href=\"http:\/\/kcdb.bipm.org\/AppendixC\/default.asp\">http:\/\/kcdb.bipm.org\/AppendixC\/default.asp<\/a><\/p><p style=\"text-align: justify;\">This division has a mandate to realize, establish, upgrade, maintain and disseminate standards for various Physico-Mechanical parameters. These include, Mass, Length, Dimension and Nano-metrology; Optical Radiation; Force and hardness; Pressure, Vacuum and Ultrasonic s; Acoustics and Vibration; Fluid flow. The measurements capabilities of NPL are efficiently disseminated among various stake-holders in the country for the benefit of the nation.<\/p><p style=\"text-align: justify;\">We are offering dissemination of apex calibration facilities not only to Indian industries, strategic-sector, and academia and government agencies but also to the SAARC and other Nations. CSIR\u2013NPL&#8217;s National Metrology, owing to its untiring efforts on precision measurement and its dissemination, has occupied a pivotal position for the all-round development of the country.<\/p><p><strong><a href=\"\/index.php\/commercial-services\/calibration-testing\/\">Go to Calibration and Testing offered<\/a><\/strong><\/p><div id=\"attachment_1365\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" aria-describedby=\"caption-attachment-1365\" src=\"https:\/\/www.getinfo.global\/wp-content\/uploads\/2021\/09\/2-1-300x229.png\" alt=\"\" width=\"300\" height=\"229\" class=\"size-medium wp-image-1365\" srcset=\"https:\/\/www.nplindia.in\/wp-content\/uploads\/2021\/09\/2-1-300x229.png 300w, https:\/\/www.nplindia.in\/wp-content\/uploads\/2021\/09\/2-1.png 383w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-1365\" class=\"wp-caption-text\">Physico-Mechanical metrology Division provides Apex level calibration to the Nation, training and consultancy services, leading to Standardization of Industrial Products<\/p><\/div><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-2262\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-2262\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Research Areas\/ Sub Division<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-2262\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-2262\"><p><span style=\"color: #556b2f;\"><\/span><\/p><ul><li><a href=\"\/index.php\/science-technology\/physico-mechanical-metrology\/mass-metrology-section\/\" rel=\"noopener\" style=\"color: #556b2f;\">Mass Metrology<\/a><\/li><li><a href=\"\/index.php\/science-technology\/physico-mechanical-metrology\/length-dimension-and-nano-metrology-section\/\" rel=\"noopener\" style=\"color: #556b2f;\">Length, Dimension and Nano Metrology<\/a><\/li><li><a href=\"\/index.php\/science-technology\/physico-mechanical-metrology\/temperature-and-humidity-metrology-section\/\" rel=\"noopener\" style=\"color: #556b2f;\">Temperature and Humidity Metrology<\/a><\/li><li><a href=\"\/index.php\/science-technology\/physico-mechanical-metrology\/optical-radiation-metrology-section\/\" rel=\"noopener\" style=\"color: #556b2f;\">Optical Radiation Metrology<\/a><\/li><li><a href=\"\/index.php\/science-technology\/physico-mechanical-metrology\/force-and-hardness-metrology-section\/\" rel=\"noopener\" style=\"color: #556b2f;\">Force and Hardness Metrology<\/a><\/li><li><a href=\"\/index.php\/science-technology\/physico-mechanical-metrology\/pressure-vacuum-and-ultrasonic-metrology\/\" rel=\"noopener\" style=\"color: #556b2f;\">Pressure, Vacuum and Ultrasonic Metrology<\/a><\/li><li><a href=\"\/index.php\/science-technology\/physico-mechanical-metrology\/acoustics-and-vibration-metrology\/\" rel=\"noopener\" style=\"color: #556b2f;\">Acoustics and Vibration Metrology<\/a><\/li><li><a href=\"\/index.php\/science-technology\/physico-mechanical-metrology\/fluid-flow-measurement-metrology-section\/\" rel=\"noopener\" style=\"color: #556b2f;\">Fluid Flow Metrology<\/a><\/li><\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-2263\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"button\" aria-controls=\"elementor-tab-content-2263\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Recent Updates<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-2263\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"region\" aria-labelledby=\"elementor-tab-title-2263\"><p>1. <a style=\"color: #556b2f;\" href=\"\/index.php\/peer-reviewed-cmcs-for-different-parameters-published-at-bipm\/\">Peer reviewed CMCs for different parameters published at BIPM<\/a><br \/>2. <a style=\"color: #556b2f;\" href=\"\/index.php\/recent-key-comparisons-participated\/\">Brief details of recent Key-Comparisons participated \/ Piloted<\/a><br \/>3. <a style=\"color: #556b2f;\" href=\"\/index.php\/technology-developed-commercialized-and-patents-filed-processed\/\">Technology Developed \/ Commercialized and Patents filed\/ processed<\/a><br \/>4. <a style=\"color: #556b2f;\" href=\"\/index.php\/new_facilities\/\">Brief About New Facilities Created<\/a><br \/>5. <a style=\"color: #556b2f;\" href=\"\/index.php\/ongoing-projects-completed-projects_du1\/\">Brief on Ongoing Projects \/ Completed projects<\/a><br \/>6. <a style=\"color: #556b2f;\" href=\"\/index.php\/academic_activities_du1\/\">Academic Activities<\/a><\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-2264\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"button\" aria-controls=\"elementor-tab-content-2264\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Contact<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-2264\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"region\" aria-labelledby=\"elementor-tab-title-2264\"><p><span><a href=\"\/wp-content\/uploads\/common\/naveen_garg@nplindia.pdf\" target=\"_blank\" rel=\"noopener\" style=\"color: #556b2f;\"><strong>Dr. Naveen Garg<\/strong><\/a><\/span><br \/><span>Sr. Principal Scientist<\/span> &amp; Head<br \/>Physico-Mechanical Metrology Division<br \/>Email: <span>ngarg.nplindia@csir.res.in<\/span><br \/>Ph: +91-11-4560 9386<\/p><p><span style=\"text-decoration: underline;\">Address<\/span><br \/>Head, Physico-Mechanical Metrology Division<br \/>CSIR &#8211; National Physical Laboratory<br \/>Dr. K. S. Krishnan Marg<br \/>New Delhi &#8211; 110012<br \/>INDIA<\/p><ul><li><a style=\"color: #556b2f;\" href=\"\/wp-content\/uploads\/2022\/08\/pk_dubey@nplindia.pdf\" target=\"_blank\" rel=\"noopener\"><strong>Dr. PK Dubey<\/strong><\/a><br \/>Senior Principal Scientist &amp; Deputy Head<br \/>Email: dubeypk<span>.nplindia@csir.res.in<\/span><br \/>Ph: 011-45608380\u00a0<\/li><\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"has_eae_slider has_ma_el_bg_slider elementor-section elementor-top-section elementor-element elementor-element-f09e020 elementor-section-full_width elementor-section-height-default elementor-section-height-default jltma-glass-effect-no\" data-eae-slider=\"28749\" data-id=\"f09e020\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"has_eae_slider has_ma_el_bg_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-bb7ce30 jltma-glass-effect-no\" data-eae-slider=\"24417\" data-id=\"bb7ce30\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fa94dd6 hfe-nav-menu__align-justify hfe-submenu-icon-arrow hfe-submenu-animation-none hfe-link-redirect-child hfe-nav-menu__breakpoint-tablet jltma-glass-effect-no elementor-widget elementor-widget-navigation-menu\" data-id=\"fa94dd6\" data-element_type=\"widget\" data-settings=\"{&quot;padding_horizontal_menu_item&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:15,&quot;sizes&quot;:[]},&quot;padding_horizontal_menu_item_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;padding_horizontal_menu_item_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;padding_vertical_menu_item&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:15,&quot;sizes&quot;:[]},&quot;padding_vertical_menu_item_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;padding_vertical_menu_item_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;menu_space_between&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;menu_space_between_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;menu_space_between_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;menu_row_space&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;menu_row_space_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;menu_row_space_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;dropdown_border_radius&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;dropdown_border_radius_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;dropdown_border_radius_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;top&quot;:&quot;&quot;,&quot;right&quot;:&quot;&quot;,&quot;bottom&quot;:&quot;&quot;,&quot;left&quot;:&quot;&quot;,&quot;isLinked&quot;:true},&quot;width_dropdown_item&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;220&quot;,&quot;sizes&quot;:[]},&quot;width_dropdown_item_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;width_dropdown_item_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;padding_horizontal_dropdown_item&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;padding_horizontal_dropdown_item_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;padding_horizontal_dropdown_item_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;padding_vertical_dropdown_item&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:15,&quot;sizes&quot;:[]},&quot;padding_vertical_dropdown_item_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;padding_vertical_dropdown_item_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;distance_from_menu&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;distance_from_menu_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;distance_from_menu_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_size&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_size_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_size_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_border_width&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_border_width_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_border_width_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_border_radius&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_border_radius_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;toggle_border_radius_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" 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elementor-section-height-default elementor-section-height-default jltma-glass-effect-no\" data-eae-slider=\"9217\" data-id=\"335c22c\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"has_eae_slider has_ma_el_bg_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f65cac3 jltma-glass-effect-no\" data-eae-slider=\"43738\" data-id=\"f65cac3\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4f68f11 jltma-glass-effect-no elementor-widget elementor-widget-shortcode\" data-id=\"4f68f11\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"952\" class=\"elementor 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elementor-section-height-default jltma-glass-effect-no\" data-eae-slider=\"84878\" data-id=\"7f6e254\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"has_eae_slider has_ma_el_bg_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6183cfe jltma-glass-effect-no\" data-eae-slider=\"34571\" data-id=\"6183cfe\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ae3ac26 jltma-glass-effect-no elementor-widget elementor-widget-shortcode\" data-id=\"ae3ac26\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"8221\" class=\"elementor elementor-8221\">\n\t\t\t\t\t\t<section class=\"has_eae_slider has_ma_el_bg_slider elementor-section elementor-top-section elementor-element elementor-element-72815aa elementor-section-boxed elementor-section-height-default elementor-section-height-default jltma-glass-effect-no\" data-eae-slider=\"77200\" data-id=\"72815aa\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"has_eae_slider has_ma_el_bg_slider elementor-column elementor-col-16 elementor-top-column elementor-element elementor-element-146505a jltma-glass-effect-no\" data-eae-slider=\"22743\" data-id=\"146505a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e06fe97 elementor-view-default jltma-glass-effect-no elementor-widget elementor-widget-icon\" data-id=\"e06fe97\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t<div 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