Patent ID: 7748128
Filing Date: 2010-07-06
Classification: G01C

Abstract:
1. A box level comprising: an elongate body having a first wall and a second wall extending between opposite ends, the walls forming opposed first and second face planes and defining vial openings; various hand-hold openings at each end; horizontal and vertical vials secured in the vial openings; hand-holds secured in the hand-hold openings; the hand-holds having outer edges together defining first and second parallel application planes just beyond the first and second face planes; the hand-holds having an interior surface defining a first outer flange, a first inner flange, a second outer flange, and a second inner flange, the first outer and inner flanges forming a first channel for receiving the first wall, the second outer and inner flanges forming a second channel for receiving the second wall; each section of the box level has installed in an open end of one or both ends a removable or permanent solid aluminum directional 2-way adaptor, this adaptor can be secured permanently in the box level section or is designed to be removed at will which allows for each section of box level to be coupled to another box level section in the same direction; and when coupled, a locking mechanism prevents separation of units while being moved; furthermore, a permanent, welded 90 degree angle directional 4-way adaptor allows for the extension of each box level in 4 directions at a 90 degree angle, primarily East, West, North, South; both the 2-way and 4-way adaptors are made of solid aluminum, and each are designed to be secured in a box level section permanently or can be removed at will; furthermore, both adaptors are designed to be inserted into the open end of the box level section, and the locking mechanism prevents wobbling, drooping, or movement; the 2-way adaptor allows for the coupling of two box level sections in the same direction; to couple another box level section, another 2-way adaptor is required, similarly, the 4-way adaptor allows for the coupling of up to four box level sections in up to four different directions, East, West, North & South, at 90 degree angles; the purpose and design of the 2-way and 4-way adaptors is to permit coupling of one or more individual, separate box level sections to achieve greater length of the open ended box level.