BikeMaster’s 4-gauge carburetor synchronizing set is designed to work with 2-, 3- or 4-cylinder engines. The 2-1/2-inch gauges are calibrated to measure 0-30 inches of mercury for vacuum (76cm/Hg) and 0-9psi for pressure, plus they’re equipped with a damping valve to even out cylinder pulses for easy reading.
The BikeMaster carburetor synchronizing set comes in a molded case complete with a 4-gauge mounting plate, hoses and 21 different adapters to ensure easy adapting to just about any engine or carburetor. $229.95.