Converse of object

• use: Using a protractor, draw a line for the back azimuth on the map from the known position back toward your unknown position.

• place: Place a protractor behind it so that the pin ( P ) passes over the scale on the protractor.

Preposition: on

• map: However, it should be noted that when using the protractor on a map, only grid azimuths are obtained.

Modifies a noun

• quadrant: Punch a tiny hole in the apex of the protractor quadrant.

Noun used with modifier

• resector: Stores 4. One resector protractor, map and mapboard per student.