4 Carburettors Synchrometer / Carburettor Synchroniser. The ultimate vacuum clock for the hobby screwdriver. Measuring range -0.6 bar. This precision device guarantees a perfect synchronization of the carburetors.

The vacuum clocks are also suitable for car carburetors, if they have a connection for vacuum measurement. The pointer damping is adjustable. Supplied complete with holder, vacuum hoses and spacers covering many carburetor connections.