Details
Measure pressure in the combustion chamber as the piston comes up on a compression stroke Hand held tester to take accurate compression readings quickly and easily Universal tapered rubber cone designed to fit spark plug holes from 10mm to 7/8 inch Large, easy to read composite scale reads both PSI and all metric ranges Perfect tool for checking compression on motorcycle spark plug holes Handy push-in compression tester has same scale reange as most other compression testers
