Carburettor air flow meter. Designed for use on IDF/DRLA/HPMX carburettors fitted with velocity stacks. The air flow meter sits down on the velocity stack to measure the air flow running into the carb on idle. A must for setting up twin carburettors.
Do not rev the engine whilst using the flow meter, this will cause damage.
Beetle 1950-1979 | Beetle Cabrio 1950-1979 | Karmann Ghia 1960-1974 | T2 Bay 1968-1979 | T2 Split 1950-1967 | Type 3 1962-1973