Master gage

A master gage comprising:

• a body, said body having first, second and third substantially planar surfaces positioned mutually at right angles with respect to each other, said rectangular body having a fourth surface opposite said first surface and parallel thereto and having a fifth surface opposite said second surface and parallel thereto, first and second guide rods on said body, said first and second guide rods lying parallel to said first surface and at a right angle with respect to said second surface:
• a first gage arm slidably mounted on said first and second guide rods for constraining said first gage arm to move parallel to said first surface when said first guide arm moves along said guide rods;
• lock means for locking said first gage arm with respect to said body, said lock means comprising a lock post having screw threads thereon, said lock post being positioned parallel to said first face, said lock means further including a half nut mounted with respect to said first gage arm to permit said first gage arm to be locked at the specific increments defined by the pitch of the threads on said lock post;
• and
• a second gate arm pivotally mounted on said first surface so that it is angularly positionable with respect to said third surface to gage angles between said second surface and said pivoted gage arm.

A master gage comprising:

• a rectangular body, said body having first, second and third surfaces respectively defining first, second and third planes, said body having fourth and fifth surfaces respectively parallel to said first and second surfaces, said planes being mutually at right angles to each other;
• first and second gage arms mounted to move on said first surface to move substantially parallel to said first plane;
• said first gage arm having a first gaging surface for moving with respect to said second plane and said first gage arm being mounted so as to maintain its gaging surface substantially parallel to said second plane so that said first gaging surface can be set to a predetermined dimension between said first gaging surface and said second plane, said first gage arm having a free end which extends beyond said body, means on said free end of said first gage arm for the selective attachment of a measuring device where the measuring device is selected from the group including a step block having a plurality of steps spaced at a known distance, a depth gage having an adjustable depth gage post and a scribing knife holder;
• said second gage arm being mounted on a pivot which is mounted on said first surface so that said second gage arm rotates about said pivot in a direction parallel to said first plane, said second gage arm having a second gaging surface thereon so that said second gaging surface can be angularly set with respect to said third plane for angularly gaging with respect to said second and third planes.