Patent ID: 6877242
Filing Date: 2005-04-12
Classification: G01B

Abstract:
1. An illuminated caliper device, comprising: (a) a caliper assembly including (b) a battery housing attached to the pivot support; (c) a first light emitting diode mounted to the housing and coupled by a switch to first and second terminals of the battery, and having an optical axis extending along the first leg to an area of the surface containing a first point to be measured by the pointed tip of the first caliper leg, and a second light emitting diode coupled by the switch to the first and second terminals of the battery, the second light emitting diode being mounted to the housing and having an optical axis extending along the second leg to an area of the surface containing the second point to be measured by a pointed tip of the second caliper leg, (d) said diodes illuminating an area between and including said first and second points, wherein the first and second light emitting diodes emit light with intensity and color that illuminate the surface and the first and second point thereof without disrupting acquired night vision of a user.