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 5965-01-142-7862
NSN 6650-01-371-2356
NSN 6110-01-232-2060
NSN 5935-01-429-1262
NSN 6105-01-532-7063
NSN 6610-01-483-5258
NSN 7035-00-703-3535
NSN 5895-00-318-8719
NSN 5915-01-359-3891
NSN 5835-00-392-2630
NSN 6320-01-578-6006
NSN 7035-01-287-9817