Hand-held needleless compass
AssigneeThe Brunton Company
InventorMarlin D. Iden
Life of this patent
Estimating the term…
Abstract
A multi-function, hand-held compass is made up of a base member having a compass vial at one end and a socket at the opposite end to releasably attach to a clip. A lateral depression is formed in the base member to facilitate gripping of the compass, and a dual-prism sighting system is disposed at the opposite end of the base member to that of the vial. Graduated markings for a protractor are formed in surrounding relation to the compass vial along with pie-shaped recesses and magnifying lenses in the base both to take azimuth readings and map readings.
Claims20
In a hand-held compass having a base member containing a compass vial provided with a directional indicator therein, the improvement comprising:
- said base member being in the form of a one-piece elongated plate having a top surface, a flat undersurface and terminating in a circular edge at one end thereof, said vial mounted in an opening adjacent to said one end of said plate, and a lateral depression defining a thumb rest in one side of and adjacent to an opposite end of said plate.
In a hand-held compass having a base member containing a compass vial provided with a directional indicator therein, the improvement comprising:
- said base member being in the form of a one-piece, elongated plate having a top surface, a flat undersurface and terminating in a circular edge at one end thereof, said vial mounted in an opening adjacent to said one end of said plate, and a depression defining a thumb rest in one side of and adjacent to an opposite end of said plate;
- and
- wherein said depression is of generally concave configuration and a soft, pliable liner covering said depression along said one side of said plate.
In a hand-held compass having a base member containing a compass vial provided with a directional indicator therein, the improvement comprising:
- said base member being in the form of a one-piece elongated plate having a flat undersurface, said vial mounted in an opening adjacent to one end of said plate;
- a socket in an end of said plate opposite to said one end;
- and
- a clip releasably insertable into said socket.
Dependencies are inferred from the claim text.