Patent ID: 8806768
Filing Date: 2014-08-19
Classification: G01C

Abstract:
1. A compass-protractor, comprising: a transparent base having a center axis point; a centrally located fastener passing through said center axis point; a first thrust pointer comprised of a first pointer body having a first mounting aperture and first numeric thrust indicia, said first thrust pointer further including a first slide mechanism for selectively revealing said first numeric indicia and a first pointed tip, said first thrust pointer rotatably attached to said fastener; a second thrust pointer comprised of a second pointer body having a second mounting aperture and second numeric thrust indicia, said second thrust pointer further including a second slide mechanism for selectively revealing said second numeric indicia and a second pointed tip, said second thrust pointer rotatably attached to said fastener; a first spacer disposed between said first thrust pointer and said second thrust pointer; a bearing pointer attached to said fastener so as to be rotatable; a second spacer disposed between said second thrust pointer and said bearing pointer; and, angle indicia for three-hundred-sixty degrees disposed over said base; wherein said first thrust pointer and said second thrust pointer are frictionally held in position; and, wherein said first numeric thrust indicia indicates engine thrust for a first vessel and said second numeric thrust indicia indicates engine thrust from a second vessel.