Hilger Watts Theodolite Manual [verified] -

Because Hilger & Watts ceased operations in the 1980s (later absorbed by Rank Precision Industries), original manuals are not in print. However, you can locate PDF copies via:

If you are restoring or utilizing a Hilger & Watts theodolite, treat it with the care due to a masterwork of optical engineering. With proper cleaning, careful leveling, and adherence to historical operating procedures, these instruments can perform just as accurately today as they did over half a century ago. hilger watts theodolite manual

Look along the external gun-sights on top of the telescope to align it with your target (e.g., a surveying prism or ranging rod). Clamp the motions. Because Hilger & Watts ceased operations in the