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 6240-01-435-3892
NSN 2925-00-098-4131
NSN 6105-00-135-7336
NSN 5985-01-474-5731
NSN 5990-00-435-1176
NSN 5945-00-513-9716
NSN 6320-01-166-3602
NSN 6685-01-395-8498
NSN 5915-01-544-4403
NSN 6135-00-990-1822
NSN 5950-01-381-5610
NSN 6145-01-175-5757