Resistance welding controller MM-315B

•Measures Weld Current, Weld Cycles, and Conduction Degrees •Battery-free Memory •Automation Power-Off System •Up to 9 Impulse Memory Capacity •Large, Easy-to-see Liquid Crystal Display •Oil & Dust Proof Case The Miyachi MM-315 is a portable, multi-function weld checker for resistance spot welders. It is one-sixth (1/6) the size and one-third (1/3) the weight of our conventional weld checkers – perfect for troubleshooting all types of resistance spot welders. It literally puts all the welding data in the palm of your hand!