Lumetron offers spring operated impact hammers, sit-50. These are precision test equipment for conducting impact test on electro-technical equipment as specified in several indian and international standards, specifications. It has a variety of versions with energy ranges from 0.2 nm to 1.0 nm, with single, dual or multiple energy settings. All parts of the impact hammers are machined to extremely close tolerances to suit the weigh specifications. The impact hammers are started manually by pulling on the cocking knob up to the desired energy level. As calibration facility for this device is not available at any indian test laboratory, lumetronics has developed a special calibration device for spring impact hammer as per iec specifications.