Description
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.