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 6130-01-130-4042
NSN 5925-01-242-9945
NSN 5855-00-862-3345
NSN 6130-01-463-2249
NSN 5905-01-234-7733
NSN 5960-01-146-0289
NSN 5935-01-425-2774
NSN 5835-01-027-1828
NSN 5945-01-330-8000
NSN 6610-00-232-9485
NSN 5895-01-167-8559
NSN 5925-01-432-2731