A former technician of Geological Survey of India has designed a Thermal Conductivity Measuring Apparatus (TCMA) a few months back, which the engineering colleges in the country can easily afford to buy.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/scientific-gear-easy-pocket
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/statesman-kolkata
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/science-and-technology
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/geological-survey-india-gsi
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/calcutta-d