The rules can be used separately, if desired. Metric graduations in 1/2 millimeters, English in 64ths. Also engraved are the 30, 45 and 60 degree angles.
A handy metric or English convertable depth gauge. The set consists of one head and two stainless steel rules; one metric, the other English. Either one can be easily slipped and locked in to the slot.
Each set individually packed in PVC covers.