Theodolite Manual - Hilger Watts

The has therefore transformed from a simple instruction book into a piece of industrial heritage. Scanning projects (like the Vintage Surveying Instrument Archive) are working to digitize every known manual variant.

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: hilger watts theodolite manual