The series was a landmark in theodolite design. In 1954, Hilger and Watts devised an instrument that was extremely compact compared to earlier designs and, at just 9 pounds, considerably lighter. This model proved to be extremely popular.
Apply a thin, even layer of grease to the threads of the screws and the bearings for the telescope (C).
The manual will provide detailed, step-by-step instructions for basic operations. A typical guide covers setting up the theodolite, measuring horizontal angles, measuring vertical angles, and—crucially— the instrument correctly. This last step is vital for preventing damage.
For surveyors, instrument collectors, and restoration enthusiasts, the phrase “Hilger & Watts theodolite manual repack” represents something far more significant than a simple collection of paper instructions. It embodies the essential, ongoing effort to preserve the technical knowledge behind some of the finest precision surveying instruments ever manufactured in Great Britain. This comprehensive article delves deep into the world of Hilger & Watts theodolites, exploring the company’s storied history, the range of instruments it produced, the vital role of original documentation, the meaning of a “repack,” and how you can access these manuals to restore and operate your vintage theodolite today.
: Rotate the telescope about its horizontal axis until it is in a compact state. For many Hilger & Watts transit models, the telescope is short enough to swivel completely. hilger watts theodolite manual repack
Internal glass circles and prisms are coated with silver or delicate anti-reflective layers. One fingerprint can ruin them.
Standard hardware store tools will damage the soft brass and specialized fasteners used by Hilger & Watts. Gather these specific supplies:
Carefully withdraw the micro screw rod. : Ensure the nylon or white pads on the locking levers are not lost during this process. 2. Degreasing and Cleaning
Set the instrument over a fine point on the ground, rotate the instrument on its base, and adjust the internal crosshairs if they swing away from the target point. The series was a landmark in theodolite design
Perform a series of test measurements to ensure the theodolite is functioning accurately and smoothly.
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Unscrew the tangent screw assemblies from their respective mounting blocks. Remove the internal opposing return springs and plungers.
: The three screws at the base used for precise leveling. Essential Tools and Materials To perform a manual repack, you will need: Apply a thin, even layer of grease to
Align the footscrews with the specific indentations on the case's bottom half.
The manual for the Hilger Watts theodolite is an essential resource that provides users with detailed instructions on operating, maintaining, and troubleshooting the instrument. It covers critical aspects such as instrument setup, measurement procedures, and error correction. A well-maintained manual ensures that users can:
Avoid using modern permanent thread lockers during reassembly. The original build relied on precise mechanical tolerances and light shellac varnishes. Required Tools and Materials