Hilger & Watts theodolites are masterpieces of mid-20th-century precision engineering. Renowned for their robust construction, exceptional optics, and reliable accuracy, these instruments remain highly sought after by surveyors, collectors, and restoration enthusiasts.

Hilger & Watts lenses are coated; manuals strictly advise using camel-hair brushes and specialized lens tissue to avoid scratching the glass. 5. Why You Need an Original Manual

Reading a Hilger & Watts glass circle requires understanding how the internal optical prisms project the scales into the auxiliary eyepiece. Reading the Microptic No. 1 Scale

Understanding the physical layout of the instrument is essential for proper operation. While specific knob placements vary slightly between models, the core architecture remains consistent.

The Definitive Guide to Hilger & Watts Theodolites: Operation, History, and Manual Reference

A higher-precision instrument often used for geodetic networks, triangulation, and precise industrial alignment.

By following the principles outlined in this guide and the original , these durable instruments can remain accurate for decades.

: A hallmark of Hilger & Watts designs, allowing for extremely precise readings of horizontal and vertical angles by aligning graduation marks. 2. Operational Procedures 0;145;0;6a7;