Three measuring heads are attached to the stainless steel rule (blade),allowing versatile measurements on various types of
The measuring heads are hardened.
Economy sets not including a protractor head are also available.
Square head: Used to set the rule at 90 degrees or 45 degrees to an edge of a workpiece.
Center head: Used to locate centers of round workpieces
Protractor head: Used to set the rule at a desired angle to an edge of a workpiece. Also used for measuring angles.