Kalpak Instruments & Controls supplies Automatic Online/ Off-line Spring Testing Machine. Kalpak Instruments & Controls manufactures a wide range of electronic test and measuring instrumentation for various industrial applications. The Automatic Online/ Off-line Spring Testing Machine of model number STM-01 is available with a maximum capacity of 2 Kg and can carry out Tensile as well as Compression Testing of Springs. The Automatic Online/ Off-line Spring Testing Machine is used on Automotive Springs, Alloy Springs, Beryllium Copper Springs, Belleville Springs, Disk Springs, Brush Holder Springs, Clock Springs etc.