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 6110-01-088-6525
NSN 6620-00-246-5159
NSN 5950-00-611-2601
NSN 5915-00-252-1876
NSN 6130-01-442-8759
NSN 6240-00-266-6258
NSN 5985-01-091-6831
NSN 6620-01-246-4314
NSN 5925-01-062-4831
NSN 6220-00-211-3985
NSN 6650-01-018-9975
NSN 5895-01-110-6737