Product details:

Helps identify damaged pistons, worn rings, burnt valves, and blown head gaskets. Works on conventional, electronic and computerized domestic and import vehicles. Features 2.5 dial face with Bourdon tube meter and dual-calibrated scales. Includes 15 rubber hose, side release valve, 10mm, 12mm, 14mm and 18mm adaptors. Can also be used for motorcycle, atv, snowmobile and marine applications.