Most classic car mechanics will understand how critcal proper carburettor float height adjustment is. This Weber float height measuring and adjustment tool allows precise adjustment of the float height of any Weber carburettor. Gauge will measure two float heights - 5mm and 6mm float heights The end of each gauge incorporates a bending slot to adjust the float arm. DCOE, DCO, DCD, DCNF, DGV, DGAV, DGMS, IDA, IDF