: Take photographs of every component before and during removal. The assembly order of Hilger & Watts instruments is complex, and misaligned spacers can lead to collimation errors.
As detailed in vintage Hilger & Watts manuals , these instruments rely on finely tuned friction-bearing systems. Over decades, grease and oil can:
For handling tiny grub screws, clicks, and internal springs. Cleaning Solvents hilger watts theodolite manual repack
Disclaimer: Disassembling a theodolite requires precision tools and patience. If you are not experienced in instrument repair, consider professional servicing.
Common models requiring a manual repack include the (a geodetic-grade beast) and the more common 20-second and 1-minute surveyor’s models . : Take photographs of every component before and
Once repacked, you must check the instrument's basic calibration: Plate Level
Most old Hilger Watts manuals were typed or printed with variable fonts. Run your PDF through OCR software (Adobe Acrobat Pro or free tools like OCRspace). This makes the manual — vital for finding terms like "vertical crosshair" or "micrometer drum." Over decades, grease and oil can: For handling
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Anti-seize compound/medium grease for the exposed foot-screws on the leveling head.