Slowly pull the inner spindle out of the outer sleeve. Do not force or tilt the spindle during extraction; the tolerances are incredibly tight.
Fine-point screwdrivers, a dusting bulb (avoid canned air), Q-tips, and isopropyl alcohol. hilger watts theodolite manual repack
: Verify the plummet still points to the same ground mark when the instrument is rotated. Transit Check : Ensure the telescope transits smoothly at both ends. Slowly pull the inner spindle out of the outer sleeve
: High-quality instrument grease (modern synthetic watch or instrument greases are preferred over original organic ones). : Verify the plummet still points to the
Carefully extract the tangent screws (E1, E2) and the leveling footscrews .
This section covers everyday operation:
This period represented the golden age of British optical and precision engineering, and Hilger & Watts was at its forefront. The company’s instruments were used for everything from land surveying and civil engineering projects to military applications and advanced scientific research.