Bearing compass

Details Bearing compass Bearing compass

1975-12-22

1977-05-03

Stephan, Steven L.

Geometrical instruments

Straight-line light ray type

With magnetic compass

G01C 1712

Patent

active

040205592

ABSTRACT:
A portable hand-held compass for taking navigational bearings on distant objects during the day or at night. The compass has a hollow housing in which a compass card is mounted for rotation about a vertical axis, a viewing window in the housing through which compass readings are taken, and a sighting barrel incorporated in the housing for viewing a distant object along a horizontal viewing path. The compass also has a manually activated light emitting diode for illuminating a reticle, a semi-reflective mirror positioned across the sighting path for reflecting an image of the illuminated reticle to the eyepiece of the sighting barrel, means for automatically unclamping the compass card when the L.E.D. is activated, and means for automatically clamping the compass card when the L.E.D. is deactivated.

REFERENCES:
patent: 567867 (1896-09-01), Schmidt
patent: 2472809 (1949-06-01), Decker
patent: 2680297 (1954-06-01), Vaucher
patent: 3191306 (1965-06-01), Kierans
patent: 3613251 (1971-10-01), Fitzpatrick et al.

Affiliated with

Also associated with

Rating

Bearing compass does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bearing compass, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bearing compass will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-337634