Measures cylinder pressure on diesel equipped cars and trucks. Records maximum pressure reached during engine test. Release valve allows for immediate venting and resets gage for repeat tests. High pressure hose is 16-1/2" long. Gage is scaled from 0-1,000 PSI and 0-70 BAR. NOTE: Adapters are NOT included with this tester and must be ordered by individual catalog numbers. Tool Aid 34700 Diesel Compression Tester