Hilger Watts Theodolite Manual New! Now

Sight your target object and use the main focusing knob until the image is sharp.

While there's no substitute for consulting the original manual for your specific model, these general procedures, consistent with original Hilger & Watts instructions, provide a foundation.

Incredible mechanical refinement, allowing sub-second estimations. 3. Anatomy of a Microptic Theodolite

When searching for a , you must know your exact model number. Below are the most common models and what to expect in their respective manuals.

Rotate the upper part of the instrument (the alidade) until the long plate bubble vial is parallel to two of your three foot-screws. hilger watts theodolite manual

Direct reading to 1 minute of arc, estimation to 15 or 30 seconds.

Unlike the ubiquitous Wild T-series or the Zeiss Th movement, Hilger Watts instruments were designed with a distinctly British philosophy: over-engineered, heavy, and capable of surviving decades of field abuse. Their optical systems used the method, which allowed for precise readings to 10 seconds of arc or better without the need for a microscope.

Geodetic surveying, triangulation, precise industrial alignment, and underground mining.

Turn the alidade 90 degrees so it faces the third foot-screw. Use only this third screw to center the bubble. Sight your target object and use the main

Use the optical plummet to shift the tripod legs until the crosshairs are roughly over the ground mark.

Eliminate by moving your eye slightly up and down behind the eyepiece. If the crosshairs appear to move against the target, refine the focus until the target and crosshairs remain locked together. Step 4: Reading the Microptic Scale

A Hilger & Watts theodolite is a delicate instrument. Proper care, as outlined in the manual, ensures a long life:

Rotate the alidade (the upper body of the theodolite) until the plate spirit level runs parallel to any two of the three leveling footscrews. Rotate the upper part of the instrument (the

Knurled screws used to lock the instrument's rotation on its axes.

Located on the telescope barrel to sharpen the target image.

: Clear explanations of the glass-circle reading systems, which were a hallmark of Hilger & Watts instruments like the Microptic No. 1 and No. 2 Maintenance