Explore The National Map Corps
Now that you have collected 1,000 points we welcome you to the Alidade Alliance. You no longer have to hold the stadia board while someone else looks through the instrument and makes the big decisions. Now, that person is you - thanks & congratulations!
An alidade is an instrument that when used with a plane table can be used to create maps in the field. The alidade is used for sighting a point and determining the direction and distance to the point. The map created is on a sheet of paper attached to the plane table.
See who is currently a member of the Alidade Alliance
