टेलीस्कोप और इसके अनुलग्नकों सहित एक थियोडोलाइट के ऊपरी जंगम हिस्से से युक्त सर्वेक्षण उपकरण

alidade's Usage Examples:

A circular plate ' made much like the backe parte of an Astrolabe ' with a pivoted alidade, the sights.

Alidade >>

crossed out, the circle being crossed by diameters to show the degrees; others have found in it a corruption of "the alidade" (q.v.).

THEODOLITE,' a surveying instrument consisting of two graduated circles placed at right angles to each other, for the measurement of horizontal and vertical angles, a telescope, which turns on axes mounted centrically to the circles, and an alidade for each circle, which carries two or more verniers.

ALIDADE (from the Arab.), the movable index of a graduated arc, used in the measurement of angles.

alidade's Meaning':

surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachments