Stores maximum compression value for up to 12 cylinders
Backlit LC display is easy to read from any angle and in any light
Uses standard 9V battery for convenience and cost
Automatically shuts off after 3 minutes of non-use (memory is retained)
Rubber boot protects the gauge from bumps and drops
Digital Diesel compression test kit. Kit features six adapters for testing modern diesel entines sold in the U.S., including GM, Ford, Dodge, and Volkswagon.