Draper expert 13 piece commercial vehicle diesel engine compression test kit draper expert 43053 b i expert quality i b allows the compression of commercial diesel engines direct or indirect fuel injection to be tested by cranking large easy to read scale measuring 0 1000psi 0 70kg cm sup2 with 600mm of flexible hose and push on adaptor incorporating a schrader one way valve side pressure relief valve allows rapid retesting display packed in plastic blow mould storage case with s