for SU and Zenith Stromberg carburettors - alloy die cast type
This inexpensive and solid synchon tester can be used for almost all cross-flow carburetors. The tester is an irreplaceable aid especially for SU carburettors or the more difficult to adjust Stromberg Zenith carburettors. The tester is placed at constant speed on the two carburettors to be compared at the air filter connection. A difference in the pressure indicated by the state of the ball forces further adjustment work.