Chinmaya Mission West
Chinmaya Mission West
The crosshairs (reticle) can become misaligned due to transport vibration. The provides screw locations and torque sequences to correct collimation errors. Guessing can shatter the delicate glass reticle.
Treat the Hilger & Watts theodolite as a mechanical clock. It is robust but relies on friction and precise glass wedges. The key skill is the Coincidence Reading —aligning those lines perfectly before writing down the number. If your FL and FR angles differ by more than a few seconds on horizontal measurements, re-level the plate bubble. hilger watts theodolite manual
To find the right guidance, you first need to identify your specific model. Most Hilger & Watts manuals cover these primary series: The crosshairs (reticle) can become misaligned due to