Patent ID: 7484307
Filing Date: 2009-02-03
Classification: G01C

Abstract:
1. A level, comprising: a body comprising (a) upper and lower parallel walls, and (b) first and second side walls operatively connected with the upper and lower walls, the upper wall having first and second linear edges extending longitudinally along opposite sides of said upper wall; the upper wall having an opening therethrough, the first of the side walls having an opening therethrough, the opening in the upper wall and the opening in the first side wall being contiguous with one another; the second of the side walls having an opening therethrough; wherein the first linear edge is disposed at the operative connection between the upper wall and the second wall, the first linear edge extending uninterruptedly from end to end of the body; and a bubble vial disposed in the body and visible from a first direction through the opening in the upper wall, visible from a second direction through the opening in the first side wall, and visible from a third direction through the opening in the second side wall, wherein the second direction is orthogonal to the first direction, and the third direction is orthogonal to the first direction.