Hilger Watts Theodolite Manual — 2021

Websites like the Land Surveying History archives, The Virtual Museum of Surveying , and various university civil engineering departments frequently host free, downloadable PDF scans of original E.R. Watts and Hilger & Watts instruction booklets.

By taking a horizontal angle reading on Face Left and then immediately taking a reading on Face Right, any horizontal collimation error (the telescope axis not being perfectly perpendicular to the tilting axis) is mathematically canceled out when you average the two readings: hilger watts theodolite manual

Because of British Commonwealth ties, many Hilger Watts instruments ended up in the Australian Army Survey Corps and the Canadian DOMS (Directorate of Military Survey). Search for "RAAF Hilger Watts manual" or "Canadian NRC Hilger Watts" . The Australian War Memorial has digitized some training manuals that include operation sections for Watts theodolites. Websites like the Land Surveying History archives, The

Look at the lower micrometer window to read the remaining single minutes and exact seconds. Add the values together (e.g., Main Scale: , Micrometer: 6. Field Adjustments and Maintenance Search for "RAAF Hilger Watts manual" or "Canadian

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.