A contact-type position measuring device is configured by a straight hole diameter measuring probe measuring a diameter of straight hole by moving in a radius direction and contacting to an internal peripheral surface of a straight hole, which extends to an axis direction; and a chamfered hole diameter measuring probe measuring a diameter of chamfered hole by moving in the axis direction and contacting to an internal peripheral surface of a chamfered hole.

Applicant has disclosed a chamfer gage with interchangeable anvil assemblies which can measure the diameter of chamfered holes and the chamfer angle (up to 135°). In the preferred embodiment, the chamfer gage comprises: an indicator housing; a compression fitting, attached to the housing, for securing an indicator spindle for movement inside the housing; and an interchangeable anvil assembly, having an anvil body with a depressible anvil or plunger inside, which can be detachably connected to the indicator housing by a threaded thumb ring rotatably mounted on the housing. Another interchangeable anvil assembly can be swapped within thirty seconds to measure the chamfer of a different hole size.

A contact-type position measuring device is configured by a straight hole diameter measuring probe measuring a diameter of straight hole by moving in a radius direction and contacting to an internal peripheral surface of a straight hole, which extends to an axis direction; and a chamfered hole diameter measuring probe measuring a diameter of chamfered hole by moving in the axis direction and contacting to an internal peripheral surface of a chamfered hole.

Applicant has disclosed a chamfer gage with interchangeable anvil assemblies which can measure the diameter of chamfered holes and the chamfer angle (up to 135). In the preferred embodiment, the chamfer gage comprises: an indicator housing; a compression fitting, attached to the housing, for securing an indicator spindle for movement inside the housing; and an interchangeable anvil assembly, having an anvil body with a depressible anvil or plunger inside, which can be detachably connected to the indicator housing by a threaded thumb ring rotatably mounted on the housing. Another interchangeable anvil assembly can be swapped within thirty seconds to measure the chamfer of a different hole size.