Patent ID: 7752770

Claim:
Tool for determining the dimension of a hexagonal nut or bolt, comprising: two arms ( 1 ), arranged at a fixed angle of 60° to each other, having flat contact surfaces on both arms to bear against two side contact faces of the hexagonal nut or bolt; a movable distance sensor device ( 2 ), also having a flat contact surface, arranged axially between the two arms ( 1 ) and adapted to contact a third contact face between the two side contact faces of the hexagonal nut or bolt; a latching device ( 5 ) whereby a user can latch the movable distance sensor device ( 2 ) when the three flat contact surfaces have reached the three contact faces of the hexagonal nut or bolt; and a viewing device ( 3 ) adapted to calculate and disclose the dimension of the hexagonal nut or bolt based on the geometrical positions of the three contact points in relation to each other.