Hole angularity gage and methods of operation and manufacture therefor

A hole angularity gage comprising:

• a hole probe comprising one or more indentations to lock a sliding member into a position, wherein each indentation corresponds to a gage setting angle;
• and
• a circuit, coupled to the hole probe, which includes a mechanical switch and an indicator, wherein the switch closes when the hole probe is rotated by an angle that is greater than the gage setting angle, and wherein the indicator activates when the switch is closed, wherein the switch further comprises:
• an electrically conductive contact disc that includes a central opening defined by an inner edge of the contact disc;
• and
• an electrically conductive center pin that extends through the central opening of the contact disc, wherein the hole probe is adapted to rotate the center pin from a primary gage axis toward the inner edge of the contact disc, and wherein the switch is closed when the center pin makes physical contact with the contact disc.

A method for manufacturing a hole angularity gage, the method comprising the steps of:

• assembling a hole probe and center pin subassembly with a bearing holder and a gage body, wherein the hole probe and center pin subassembly includes a hole probe, a bearing, and a center pin, and wherein assembling the hole probe and center pin subassembly includes assembling the hole probe and the center pin with the bearing holder, and attaching the bearing holder to the gage body, so that the center pin extends into a central channel of the gage body;
• assembling a contact disc subassembly with a gage body, wherein the contact disc subassembly includes a contact disc, and wherein assembling the contact disc subassembly includes inserting the contact disc into the central channel of the gage body;
• assembling an indicator subassembly that includes an indicator, an indicator housing, and a battery holder, and wherein assembling the indicator subassembly includes attaching the indicator and the battery holder to the indicator subassembly;
• and
• attaching the indicator subassembly to the gage body.