Historical Theodolite Instrument - Precision Surveying Equipment #279537 (License: Personal Use)

This illustration depicts a classic transit theodolite mounted on a wooden tripod, featuring a telescopic sight, circular graduated arcs for angular measurement, and precise leveling vials. The instrument includes micrometer screws for fine adjustments and a robust alidade assembly, reflecting engineering standards of late 19th- to early 20th-century geodetic work. Such devices were essential for topographic surveys, boundary demarcation, and civil engineering projects before digital total stations became widespread.

Used on educational, historical, or technical websites discussing surveying history, cartography, or antique scientific instruments; matches user intent for research, academic reference, or museum exhibit documentation.