Hilger Watts Theodolite Manual Jun 2026

Original Hilger Watts manuals often have confusing "exploded parts views" that are hard to read.

Companies that sell refurbished vintage surveying equipment (e.g., in the UK, Timbeter in Europe) sometimes have a library of original manuals. They may sell a photocopy for a small fee ($15–$30).

You will see the main graduated circles for both the horizontal and vertical plates. hilger watts theodolite manual

Separate controls for both horizontal (azimuth) and vertical (elevation) motion. Clamps lock the movement, while tangent screws allow for micro-adjustments.

As of 2025, there are no new Hilger Watts theodolites being manufactured. The company’s surveying division was disbanded in the late 1980s. However, there is a vibrant community of restoration enthusiasts and alternative surveyors who prefer mechanical instruments because they require no batteries, no Bluetooth, and no software updates. Original Hilger Watts manuals often have confusing "exploded

To help tailor this documentation for your specific instrument or restoration project, please let me know how to proceed.

: Detailed instructions on leveling and centering using the optical plummet. Reading Systems You will see the main graduated circles for

Hilger & Watts was a premier British instrument manufacturer known worldwide for creating highly accurate optical surveying instruments. During the 20th century, their Microptic theodolites set the industry standard for precision engineering, geodetic surveying, and industrial alignment.

Hilger & Watts was a premier British manufacturer of precision optical instruments, formed in through the merger of Adam Hilger Ltd and E.R. Watts & Son . Their theodolites, particularly the Microptic series, became industry standards for surveying, mining, and meteorological work across the United Kingdom, Australia, and Canada. Core Manual & Operating Procedures

Horizontal collimation error occurs when the line of sight is not perpendicular to the horizontal axis.