Found at an estate sale. Sold as found as parts because its untested. Not sure how it works. See photos
MoTest Recording Compression Tester for 8 Cyl. Gas Engines 50-250 lb./sq. in.
Professional 0-300PSI Compression Tester for Petrol Gas Engines - All-in-One Kit
8 Piece Compression Tester Kit for Gasoline Engines, Cylinder Compression Spr2716
8 Piece Compression Tester Kit for Gasoline Engines, Cylinder Compression Spr5512
Vintage USA Compression Tester Schauer Vintage Auto Engine Motor Untested Vc2
Vintage PENSKE COMPRESSION TESTER MODEL 244-2149 UNTESTED
