The HH Compression Tester 1950s Model No.5 by Harvey E Hanson is a vintage diagnostic tool specifically designed for testing engine compression. With a maximum PSI of 200, this United States-made tester comes equipped with a gauge for accurate readings. Ideal for automotive enthusiasts and mechanics looking to diagnose issues with engine performance, this compression tester is a reliable and durable tool for helping to maintain and improve the efficiency of internal combustion engines.
