This is a special caliper that can stably and repeatedly measure at a specified position the thickness of a racing boat propeller edge.
Flip the snap lever to open the measuring unit. Pointing the stopper at the tip of the measuring unit to the workpiece enables you to easily and quickly measure thickness at a specific position. This caliper is specially designed for thickness measurement and is extremely helpful for comparative measurement of dispersion of part dimensions.
Features
Equipped with an ABS (absolute) scale that eliminates troublesome on-site origin setting work.
Facilitates thickness measurement from the edge to the specified position.
Lever operation allows stable repeated measurement.
This measuring tool was developed and manufactured on behalf of the National Boat Racing Association to verify the thickness of propeller edges, which is important for ensuring race participant safety if a participant is thrown overboard.