Product Description Diesel Engine Compression Tester Set Set consists of Cat. No. 34700 Diesel Engine Compression Tester and five of the most popular diesel tester adapters. Presented in a molded plastic storage case with carrying handle. Instructions for each adapter are included. Model No. 34900 Diesel Engine Compression Tester Set comes with the following: Cat. No. 34700 - Diesel Compression Tester. 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. Cat. No. - 34730 - Diesel Tester Adapter for GM Cars and 6.9 & 7.3 Liter Ford/International Engines. Cat. No. 34740 - Diesel Tester Adapter for Volkswagen, Volvo, Audi and others. Cat. No. 34760 - Diesel Tester Adapter for Small Cummins Engines. Cat. No. 34770 - Diesel Tester Adapter for Bacharach Adapters. Cat. No. 34780 - Diesel Tester Adapter for Mercedes Benz Cars.