Is a “M” micrometer style wrench calibrated in the same way as other micrometer style wrenches?
NO! The “M” series requires special tools available to perform calibration. DO NOT DISASSEMBLE a “M” wrench as you would other micrometer style wrenches! The mechanism in the “M” does not rely on shims, spacers or blocks to perform calibration. Instead, all calibration is performed externally, quickly, and without the need to disassemble the wrench. This keeps the internal components free from outside contaminates, eliminates calibration kits, and makes “tweaking” the calibration very simple.
