Patent ID: 9683823
Date: 2017-06-20
CPC Classifications: F42B

Claim:
1. A comparator device using an indicator having a moveable probe adapted for measuring the length of a cylindrical object having a base and a rounded nose, from base to nose, the device comprising: a fixture having a longitudinal upwardly facing surface and including a mounting element on a first longitudinal end of the upwardly facing surface and a stop element at a second longitudinal end of the surface, opposed to the first end; wherein the indicator is coupled to the mounting element and configured so the probe of the indicator can move parallel to the upwardly facing surface, toward the stop element; and at least one object holder removably supported on the upwardly facing surface, having a first end that abuts the stop element so as to prevent movement away from the indicator, and a second end that faces the indicator, and defining a cylindrical chamber, open at the second end, and having a first inner diameter, and having a ring, having a second inner diameter, smaller than the first inner diameter, inward of the second end, and the chamber configured to receive the cylindrical object so a circumference of the nose abuts the ring and the base is aligned to and accessible to the probe.