Lumetronics offers Spring Operated Impact Hammer. Lumetronics also manufactures wide range of precision custom built test and measuring equipments for various types of product testing applications. This Impact Hammer is a precision engineered test instrument. The Spring Operated Impact Hammer, Model SIT-50, consists of body, striking element and release cone having calibrated mass and dimensions. This Impact Hammer is available with a compact carrying case. This Impact Hammer has dimensions of 51 mm diameter X 320 mm long without actuating.