Hilger Watts Theodolite Manual Repack Verified Page

Soak the foot screws and the tribrach base in a shallow bath of isopropyl alcohol to dissolve old, gummy grease. Clean the threads thoroughly with a brass wire brush or stiff toothbrush. 2. Disassembling the Standards and Vertical Axis

When re-attaching the tripod adapter or base components, tighten screws evenly and slowly (e.g., 1/2 turn at a time) to prevent binding. 4. Post-Repack Calibration

The manuals produced for these instruments were masterclasses in technical writing. They contained:

Isopropyl Alcohol (IPA) or high-grade white spirit (avoid harsh solvents that may damage paint). hilger watts theodolite manual repack

Standard tapered screwdrivers will slip and mar the brass screw slots. Use gunsmith-style hollow-ground bits that fit the slots perfectly.

If your repack lacks these, it’s merely a user guide, not a true restoration tool.

If the glass circles have film or dust, clean them in situ if possible. Use an oil-free blower bulb to remove loose dust. If grease contamination has occurred, use a sterile cotton swab lightly moistened with specialized optical cleaner. Wipe in a single, gentle direction. Never scrub or apply pressure. 5. Repacking and Re-Lubrication Soak the foot screws and the tribrach base

Specialized lens cleaner or pure isopropyl alcohol.

Dried original lubricant can look like amber or dark brown varnish. It binds tenaciously to brass, bronze, and aluminum components. Mechanical and Body Cleaning

Apply a drop of fine watch oil to the pivot pins and spring-loaded plunger housings that provide counter-tension to the tangent screws. 6. Reassembly and Calibration Checks They contained: Isopropyl Alcohol (IPA) or high-grade white

Restoring Precision: A Guide to the Hilger & Watts Theodolite Manual Repack

The rain in the Cascades didn’t just fall; it reclaimed things. For Elias, a retired surveyor, it meant it was finally time to tuck away his most faithful partner: the .

: This extensive collection holds numerous Hilger & Watts theodolites and often includes related documentation in their records. Their database can be searched for specific models and serial numbers.

: An alternative model, often with different specifications. A later “Mark II” version had its own dedicated manual, covering features like the circle reading system, telescope, bubbles, and illumination.