Please see all pictures, in original box.

The HH Compression Tester Model No.5 by Harvey E. Hanson RB is a vintage tool from the 1950s, made in the United States. This compression tester is a collectible piece for mechanics and enthusiasts of classic vehicles. With its brand pedigree and unique design from the mid-20th century, this tool offers a glimpse into the past of automotive maintenance and repair.