Tested it on 1.5 Volt battery, and it worked. Looks really really clean and barely used.
2X- vintage KAL-equipment Battery Cell Tester # G-515-untested
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Vintage DAVENSET EXIDE Battery Cell Tester - Pat. 616860 ENGLAND!
mac tools car battery cell tester bt-725
Vintage Mac Tools Electric Tester ET100 TOP SHAPE Works USA made
1950's Allen Electric & Equipment Co. Wooden Handled Battery Cell Tester WORKS
