Hilger Watts Theodolite — Manual ((full))

Read the primary degree and tens of minutes from the main scale window.

Read the whole degrees and tens of minutes from the main scale window.

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

If you’d like, I can:

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

Finding an original manual requires some detective work. Here are the most effective avenues to explore:

Carefully lift the theodolite from its wooden or metal transit case by its frame (never by the telescope). hilger watts theodolite manual

If you rotate the instrument 360 degrees and the optical plummet moves off the ground mark, the plummet's internal reticle screws need adjusting.

Turn the micrometer drum until the main scale division line is centered perfectly between the double indexing lines (or until the upper and lower images coincide, depending on the exact model number).

Turn the micrometer knob until the upper and lower division lines of the main scale are perfectly aligned or centered within the reading window's forks. Read the primary degree and tens of minutes

When looking through the reading eyepiece of a No. 1 model, you will see two illuminated apertures: typically the upper window displays the Vertical Circle () and the lower window displays the Horizontal Circle ( H ). Look for the main degree numbers printed on the scale.

to align the instrument directly over the ground marker by sliding it across the tripod head. Adjust the tripod legs to level the circular bubble for rough positioning. three footscrews on the base to precisely center the plate level bubble

Older models utilizing mechanical vernier scales on brass or metal plates, requiring an external magnifying glass to read. 2. Anatomical Breakdown of the Instrument If you’d like, I can: Allowing for fast

: A higher precision version designed for more demanding geodetic work, reading to 1 second of arc.

Let’s assume you have obtained a for your Microptic T2. Here is a typical calibration workflow drawn directly from the manual’s text: