DIFFERENTIAL PRESSURE TESTER WITH MASTER ORIFICE (LARGE BORE)

For engines over 1000 cu. in. per FAA regulation 4313. This Differential Cylinder Pressure Tester combines the features of the popular 2E tester and a Master Orifice into one tool. Now you can conveniently check the calibration of your pressure tester before each use (in accordance with Teledyne Continental Service Bulletin M85-15) without disconnecting the tester.

Comes with complete instructions. Includes hose and spark plug adapter.

Note: For use with engines with Bore Diameters greater than 5" per AC43.13 REV 1B.