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Telescopic Alidade

An tool utilized in topographic surveying, together with a topographic drafting board, for plotting comfort, contours, and ground functions on a map. The alidade includes a rule for drawing instantly traces at the drawing board and an upright that helps at the horizontal axis a telescope with stadia hairs and a vertical circle with diploma readings for figuring out angles of slope.
An alidade used with a plane table, consisting of a telescope hooked up on a straightedge ruler, fitted with a level bubble, scale, and vernier to degree angles, and calibrated to measure distances.

Technical Specifications

Visible Range

1-4 Km

Diameter of Lens



Cast Iron

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