Portable Weld Checker – 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


MM-315 is a portable, multi-function monitor 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!