Hilger Watts Theodolite Manual !!link!!

Rotate the instrument 90 degrees so that the bubble vial points toward the third footscrew. Turn only the third footscrew to center the bubble.

Positioned parallel to or directly alongside the main telescope eyepiece. This auxiliary microscope allows the operator to read both the horizontal and vertical internal glass circles simultaneously.

When you look through the reading microscope, you will typically see two windows labeled (Horizontal) and V (Vertical).

Always transport the theodolite in its original fitted wooden or hard-shell carrying case. Ensure the instrument is securely clamped but not over-tightened, and never force the lid closed if the instrument is seated incorrectly. 6. Sourcing Hilger & Watts Theodolite Manuals

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Beyond user manuals, Hilger & Watts also published dedicated technical documentation for repairs and adjustments. These are especially useful if you need to get a non-working instrument back into shape. Examples you might search for include an "Instruction Manual, Aberdeen Works of Hilger & Watts Ltd." from around 1970, which contained a set of electrical and mechanical manuals used in the company's own drawing offices.

Precise physical setup is mandatory to ensure the mathematical accuracy of your angular measurements. Step 1: Tripod Setup Extend the tripod legs to a comfortable working height.

The tangent screws and moving parts require specific lubricants. The manual will often specify specialized watchmaker-grade oils or greases; automotive or general-purpose grease will cause the instrument to seize in cold weather. hilger watts theodolite manual

: 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;

The microptic readout allows the user to see the horizontal and vertical circles simultaneously.

Operating a vintage optical theodolite requires a methodical approach to eliminate instrumental errors. Step 1: Setting Up and Rough Leveling

Turn these two footscrews simultaneously in opposite directions (both thumbs moving in, or both moving out) until the bubble is perfectly centered. Rotate the instrument 90 degrees so that the

The three-armed base casting housing the leveling footscrews and the circular spirit level.

Vintage optical instruments require careful upkeep to preserve their functionality and resale value.

Here is an extensive guide to these timeless instruments, covering everything from operating principles to finding historical documentation. 1. Understanding the Hilger & Watts Legacy