As the instrument settles into the base cups, look closely at the upper stabilizing blocks on the case door or walls. The molded cutouts in the case must clear the reading microscope and illumination mirrors without forcing them.
: If your model is electronic (like the Microptic Universal Auto-collimator), always turn off the power before removing the battery to prevent potential damage. 2. Positioning the Telescope
A generic repack is useless without the . When repacking your manual, pay special attention to:
Apply a thin layer of medium-viscosity dampening grease to the foot-screw threads. This grease provides a smooth, heavy resistance feel and prevents the screws from drifting during measurements. Reassembly and Quality Checks hilger watts theodolite manual repack
The is a masterpiece of mid-20th-century precision engineering. If your vintage instrument feels "grumbly" or stiff, a manual "repack"—cleaning and re-lubricating the internal bearings and slow-motion screws—can restore its smooth, professional operation. 1. Preparation and Disassembly
There are several reasons why a repackaged or reprinted manual for the Hilger Watts theodolite may be necessary:
Once repacked, the instrument must be recalibrated to ensure accuracy. Critical tests include: As the instrument settles into the base cups,
A brass drift punch, a set of precision tweezers, and a spanning wrench for optical retaining rings. Step-by-Step Disassembly Sequence 1. Outer Shell and Accessories
Slowly close the case lid or door. It should close completely under its own weight with zero resistance. If you feel any springiness or obstruction, stop immediately. Open the case and inspect for an uncentered screw, an unfolded mirror, or an incorrect telescope angle.
: Small precision screwdrivers and possibly a capstan head screw adjuster. Cleaning Supplies : Soft lint-free cloths and brushes. Step-by-Step Repacking Procedure 1. Disassembly of Tangent Screws This grease provides a smooth, heavy resistance feel
: Ensures the vertical circle reads zero when the telescope is perfectly horizontal.
: Checking for "scoring" on the bearings or damage to the optical glass circles.
He decided, without much drama, to repack it properly. He laid the manual open, smoothed the oilcloth, and wrapped the theodolite as if returning it to an original owner. He threaded the red string through the booklet’s binding and, with care learned from years of watching someone else work, pulled it tight.
If storing your Hilger & Watts theodolite for extended periods: Action Item Every 3–6 months Prevents fungal growth on internal optical glass prisms. Horizontal Storing