Imicrometer knob is rotated to centre a graduation line of the main scale to the index pointer; the indicated angle is the sum of the two scale readings. For horizontal use an accessory base is required
An optical instrument consisting of a sighting tube and a quadrant scale plate, used to ascertain the angle of elevation of an object.
Classification: Levels (surveying)
NSN 6150-00-221-2593
NSN 5998-01-170-5147
NSN 6610-01-250-9327
NSN 5935-01-614-2030
NSN 5985-01-122-0771
NSN 4140-01-447-3716
NSN 5920-00-107-2798
NSN 6105-00-799-3362
NSN 6110-00-363-3974
NSN 6320-01-317-3663
NSN 6645-00-255-8182
NSN 5975-01-264-1720