by Motor State
Save Liquid error (product-badge line 32): Computation results to '-Infinity'%
Tester checks cylinder compression from 0 to 300 psi and features an air-hold valve to reset gauge. One piece stepped brass end fitting with o-rings fits 14mm and 18mm spark plug threads. Easy to read 2-1/2" dial is encased in a metal housing surrounded by an anti-shock rubber cover. A quick release coupler connects the included 12" flexible hose to the gauge.