Instrument used for measuring area on a contour map is

• The different types of area measuring devices are as follows:
1. Clinometer or Inclinometer: It is used to measure angles of slopes either elevation or depression of an object with respect to gravity direction as reference.
2. Planimeter: It is the mechanical device used to measure area of plane. This measurement consists of dragging along boundary region.
3. Graphometer: It is semi-circular surveying instrument used to measure angles.