Hilger Watts Theodolite Manual

The three-arm base incorporating three leveling footscrews and a circular spirit level for rough leveling.

Adjust the focus until the ground mark and the internal reticle crosshairs are both sharp.

Older models utilizing mechanical vernier scales on brass or metal plates, requiring an external magnifying glass to read. 2. Anatomical Breakdown of the Instrument hilger watts theodolite manual

Rotate back to the original position and verify. Repeat until the bubble remains perfectly centered through a full 360-degree rotation. Step 4: Centering with the Optical Plummet

These were smaller, less precise instruments (often 20-60 arc-second), designed for construction and mining. Step 4: Centering with the Optical Plummet These

The Ultimate Guide to Hilger & Watts Theodolite Manuals: Operation, Care, and History

: Heat waves that cause irregular refraction, making your target dance. Company History and Legacy

A smaller eyepiece located next to or near the main telescope eyepiece, used strictly for reading the horizontal and vertical angle circles.

Whether you are a collector, a historical restoration enthusiast, or a surveyor working with vintage equipment, understanding how to operate, read, and maintain these mechanical masterpieces is essential. This comprehensive guide serves as a practical manual and technical reference for Hilger & Watts theodolites. 1. Company History and Legacy