Patent ID: 7895767
Filing Date: 2011-03-01
Classification: G01B

Abstract:
1. A digital depth gauge apparatus for measuring a depth of a hole in, or surface of, an object, the apparatus comprising: an elongated reader body that includes a distal end and a proximal end having a longitudinal axis; a user interface including a display and at least one actuator that controls operation of at least one of the display and the apparatus; a probe that extends from the distal end of the reader body, the probe including a tip for locating a distal surface of the object; the reader body proximal end configured to abut an other surface of the object; and an electrical resistance-based sensor fixedly positioned relative to at least one of: a) the reader body, and b) the probe, and movably positioned relative to, respectively, at least one of: b) the probe, and a) the reader body, the sensor comprising an interface to the user interface display and having an output indicating a relative distance between the probe tip and the proximal end of the reader body.