Hilger Watts Theodolite Manual Fix Jun 2026

List of user-adjustable errors with step-by-step:

The manual is divided into several sections, each covering a specific aspect of the instrument: hilger watts theodolite manual

A "one-second" high-precision instrument used for primary triangulation and geodetic surveying. List of user-adjustable errors with step-by-step: The manual

| | Test | Correction | | :--- | :--- | :--- | | Plate level error | Bubble not centered after 180° rotation. | Adjust bubble vial using adjustment screws. | | Collimation error (Horizontal) | Line of sight not perpendicular to horizontal axis. | Sight far point in Face I & Face II; difference >2x error → adjust reticle screws. | | Horizontal axis tilt | Vertical crosshair leans when telescope is tilted. | Requires workshop adjustment (shims). | | Vertical index error | Face I & Face II vertical readings do not sum to 360°. | Adjust vertical circle index via micrometer knob screw (detailed in manual). | | | Collimation error (Horizontal) | Line of

Provides historical context for 20th-century surveying standards.