Hilger Watts — Theodolite Manual ((hot))

Use a soft, clean camel-hair brush to remove dust. Clean lenses with photographic lens cleaner and lens tissue, never with abrasive cloth [3].

Never use harsh solvents or abrasive cloths. Use a soft camel-hair brush to remove loose dust, and only clean optical surfaces with high-quality lens tissue and an approved optical cleaning solution. hilger watts theodolite manual

When searching for a , you must know your exact model number. Below are the most common models and what to expect in their respective manuals. Use a soft, clean camel-hair brush to remove dust

Simply read the degree mark passed by the index pointer, then add the corresponding minutes directly from the sub-scale. Reading the No. 2 (One-Second) Model Use a soft camel-hair brush to remove loose

This article provides a comprehensive deep-dive into the history of Hilger Watts, the specific models they produced, how to locate a , and how to use that manual to keep your instrument in perfect working order.

| Problem | Probable Cause (per manual) | Solution | | :--- | :--- | :--- | | | Clamp screw is over-tightened or dirt in the lower motion | Loosen clamp, use tangent screw (max 1 turn) | | Double vision in the micrometer | Interference in the optical prism | Clean external optics; internal requires a specialist | | Bubble won't center | Adjustment screws have shifted | Use the manual's "peg adjustment" method (two screws on the level vial) | | Graduations blurry | Incorrect focus of the reading microscope | Turn the knurled ring around the reading eyepiece |

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