I have a pre-owned Mac Tools Circuit Tester for 6/12 volt. It is tested and works.
Mac Tools Circuit Tester ET112X
Mac Tools Circuit Tester Kit
Mac Tools Compression Tester Gauge 0 to 300 PSI Dial No. 37089 USA TESTED
Mac Tools Compression Tester CT3015B Pre-owned w/ case
Mac Tools Compression Tester Gauge CT70 Missing Two Hoses in Box
Vintage Mac Tools Electric Tester ET100 TOP SHAPE Works USA made
