The Working Edge Of Alidade Is Known As

By Aina Parasher|Updated : July 8th, 2022

The working edge of alidade is known as-

  1. Ebonite Edge
  2. Fiducial Edge
  3. Straight Edge
  4. Graduated Edge

Answer: B. Fiducial Edge

The working edge of alidade is known as fiducial edge.


An Alidade is a surveying instrument used in plane table surveying for sighting a point which needs to be located on a map.

  • One edge of the alidade is the fiducial edge or bevelled edge and the other one is the graduated edge.
  • Fiducial edge is known as working edge and graduated edge is used to draw line of sight on map.

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