Sparex source: https://us.sparex.com/diesel-compression-tester-26265.html Product: Diesel Compression Tester - Sparex S.26265 SKU: S.26265 Listing note: Measures the compression pressure created by engine rotation in each cylinderCalibrated in bar and PSIAssortment of injectorsSuitable for fitting to injector or glow plug holesCapacity: 70 bar and 1000 PSI'' Detail enrichment pending: OEM cross references, fitment, catalog pages, and full specifications.