Hilger Watts Theodolite Manual //free\\ -

Direct reading to 1 second of arc using an internal optical micrometer.

A coincidence reading system is used where double lines must be perfectly aligned using the micrometer knob before reading the exact seconds. 4. Maintenance, Calibration, and Troubleshooting

Formed in 1948 by the merger of Adam Hilger Ltd. and E.R. Watts & Son, the company combined cutting-edge optical engineering with masterful mechanical craftsmanship.

This is the most distinct feature of Hilger & Watts theodolites. You do not read numbers directly; you match lines. hilger watts theodolite manual

Accuracy depends entirely on setup.

Allowing for fast and accurate reading of circles [3].

If you attempt to use the theodolite without the manual, you will likely encounter these issues: Direct reading to 1 second of arc using

Do you have a Hilger Watts manual or theodolite story? Share your experience in the comments below (on the original blog post). Your knowledge could help another surveyor save a piece of history.

Covers troubleshooting for mechanical parts that rarely fail but require specific care.

Extend the tripod legs firmly into the ground, ensuring the tripod head is visually level. This is the most distinct feature of Hilger

Re-tighten the central fixing screw and re-verify the spirit levels. Reading the Angles on Microptic Models

If the bubble moves when the instrument is rotated 180°, adjust the plate level screws [3].