CONVERTIBLE DIRECTIONAL AZIMUTH AND DIP MEASURING MODULAR COMPASS AND METHOD

摘要

A compass adapted to measure direction and dip values with or without t he assistance of the earth's magnetic field. A laser pointer module and a magnetic needle module are interchangeably arranged in a body having an attached reference angle plate appropriately set to measure horizontal and vertical angles. The compass is especially useful in underground mines or other locations having magnetic anomalies whe re conventional magnetic compasses are rendered useless. Both embodiments are capable of taking readings when the compass is set in an upright or upside-down position.