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 5945-01-462-1555
NSN 6645-01-190-4297
NSN 5945-00-806-5602
NSN 5915-01-512-8851
NSN 5920-01-050-7474
NSN 5905-01-097-7872
NSN 5990-01-132-4156
NSN 5855-00-149-0766
NSN 2925-00-497-7808
NSN 5920-00-730-8541
NSN 5895-01-437-4666
NSN 5910-01-239-0109