The cables are not the best. Should be replaced. Otherwise looks good but untested.
Snap On MT 416 Primary Tach Dwell Meter
Snap-on MT-416 Primary Tach Dwell Meter Vintage Ignition Tester Damaged Cord
Snap-On MT-2500TSI & MT-2500VCI Programmable Interface Cartridges V 5.4
SNAP-ON MT-441 Ignition Advance Meter And Timing Light Kit UNTESTED.
Snap-On MT 414 Primary Tach Dwell Meter Parts or Repair
Snap-On MT 470 Digital High Impedance Volt & Ohm Meter - Red