Wilmar performance tool compression tester perfect tool for checking compression on motorcycle spark plug holes.
- 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 range as most other compression testers
