The Katech WHISTLER™ Compression Ratio Tester is an electronic device that instantly determines the compression ratio of virtually any engine. Using the WHISTLER is easy; remove a spark plug and screw the WHISTLER adapter in its place. Enter the number of cylinders, CID, and temperature of the engine into the WHISTLER. Then, bring the engine to TDC, and the unit will display the compression ratio to the nearest hundredth of a point. All you need is a low volume air source and a 120V AC supply. The Whistler is now accurate to ± .05 compression!
The new redesigned unit is included with the Katech WHISTLER™ Compression Ratio Tester
PART NUMBER | KAT-A0250-G
Need calibration or repair? Please use the following form: Whistler Calibration and Repair Request Form (see instructions tab above)