An item consisting of two separate mounting brackets, one having an aperture with cross hairs, the other with a plain aperture; or each with a fitted device with such apertures. It is attached to a level or straightedge and is used as an inexpensive substitute for surveyors' instruments to level and align walls, grades, fences, and the like. See also level, surveying.
Classification: Parts and accessories for surveying
NSN 5965-01-552-3670
NSN 5905-01-463-2803
NSN 5855-00-256-5562
NSN 5996-01-285-8797
NSN 5905-00-903-1072
NSN 4140-01-445-6656
NSN 6145-01-169-5663
NSN 5855-01-360-6650
NSN 5920-01-367-5791
NSN 5975-00-495-6735
NSN 5915-00-317-9937
NSN 6650-00-184-1581