A Survey Compass is an instrument used in surveying to measure horizontal angles. It is an instrument used frequently by surveyors for measuring horizontal angles and also for determining the magnetic bearing of a line of sight. The compass consists of a pivoted magnetic needle, a graduated horizontal circle, and a sighting device. Compass surveying is a kind of surveying in which surveying lines directions are established using a magnetic compass and their lengths are measured using a tape. Survey Compass is very effective.