The Vintage Harvey E. Hanson Compression Tester 16455-1 Model 1 is a diagnostic service tool designed for automotive use. Made in the United States by the Harvey E. Hanson Co., this compression tester is capable of measuring up to 200 PSI. It is a classic piece of equipment that serves its purpose for testing engine compression in a retro-inspired design. Perfect for car enthusiasts or professionals looking for a reliable and durable compression tester with a touch of nostalgia.