control point
noun Aerial Photogrammetry.
a point located on the ground by precise surveying that when identified on aerial photographs provides the control necessary for producing a photomap.
Origin of control point
First recorded in 1925–30
Words nearby control point
control freakery,
control grid,
control group,
control key,
control panel,
control point,
control rocket,
control rod,
control room,
control stick,
control surface