Hilger Watts Theodolite Manual Jun 2026

Hilger & Watts theodolites are legendary precision instruments that shaped modern surveying, engineering, and optical metrology throughout the 20th century. Renowned for their robust construction, exceptional optics, and innovative glass circles, these British-made instruments remain highly prized by collectors, surveyors, and restoration enthusiasts today.

Rotate the upper body (alidade) of the theodolite until the long plate bubble vial is perfectly parallel to two of the three leveling footscrews.

While competitive European manufacturers like Wild Heerbrugg dominated continental markets, Hilger & Watts became the workhorse of the British Commonwealth and military forces. Their instruments are characterized by:

Rotate the instrument 90 degrees so that the bubble tube points directly toward the third footscrew. Turn only the third footscrew to center the bubble. hilger watts theodolite manual

Adjust the tripod leg heights until the bubble in the circular leveling vial rests in the center. Fine Leveling (Plate Bubble):

The "story" of the manual isn't just about technical steps; it’s about the ritual of accuracy that defined an era of engineering. 1. The Heritage of the Name

What is the stamped on your instrument?

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Read the primary degree and tens of minutes from the main scale window.

This comprehensive guide serves as a functional manual overview, operational reference, and historical guide for Hilger & Watts optical theodolites, focusing on popular models like the Microptic No. 1 and No. 2. 1. Introduction to Hilger & Watts Instruments Company Origins Adjust the tripod leg heights until the bubble

0;40c;: Position the tripod over the mark and use the foot screws and altitude bubble to level the theodolite.

According to standard theodolite operating guides 0;52;, successful measurement requires a specific setup sequence: 0;265;0;418;