Our own differential pressure tester comes complete with on-off safety valve to eliminate hose pressure when disconnecting from the cylinder. Can be used to check intake or exhaust valves, cracked or worn rings, defective cylinders, worn bushings, etc. Specifications: Orifice size is .040". precision gauges matched to within +/-2%. Includes 12MM Spark Plug Adapter, 24" pressure hose, and complete instructions. Factory calibrated. Letter of certification available upon request.
Protective form-fitted hard case included.