Mangal instrumentation provideshas introduced digital transparency testers. Some general specifications: simple-to-operate, work smoothly in different weather conditions, digital display of result, portable, light weight and easy-to-carry. Microcontroller-based transparency testers with printer and rs232 port model are also available. These digital transparency testers are used for traffic police use. These transparency testers find their applications in are used for checking transparency of glasses in vehicles and cars as per requirements of indian and international standards. Some of the benificial features ofthe handheld testers are as follows; show the percentage of light passing through tinted glasses, solar films, dark glasses/films, etc. The dare devil murders, molestations, gunning downs, shootouts, kidnappings, smugglings, drug peddling, etc, could be easily controlled by the removal of dark/tinted glasses/films from the vehicles especially cars which have become safe moving shelters for criminals. Features include: simple-to-operate, work smoothly in different weather conditions, digital display of result, portable, light weight and easy-to-carry. Microcontroller-based transparency testers with printer and rs232 port model are also available.