Patent Document ID: 8732970
Application ID: 13439903
Patent Status: 1

Claim One:
1. A device for defining an angle to be measured, the device comprising: an outer sphere having a plurality of outer surface circumferential markings positioned on a surface portion thereof that are centered about an outer sphere axis; an inner sphere carried by the outer sphere and having a first and second plurality of inner surface circumferential markings positioned on a surface portion thereof, the first plurality of inner surface circumferential markings being centered about a first inner sphere axis and the second plurality of inner surface circumferential markings being centered about a second inner sphere axis, wherein the first inner sphere axis and the second inner sphere axis are oriented substantially perpendicular to one other; an outer sphere fluid carried by the outer sphere; and a measurement fluid suspended in the outer sphere fluid exterior to the inner sphere; wherein the inner sphere is suspended in the outer sphere fluid; wherein the plurality of outer surface circumferential markings and the first and second plurality of inner surface circumferential markings represent angular values; wherein the angle to be measured is defined as a position of an intersection of one of the plurality of outer surface circumferential markings with at least one of the first and second plurality of inner surface circumferential markings.