G - Physics – 01 – C
Patent
G - Physics
01
C
G01C 17/02 (2006.01) G01C 9/24 (2006.01) G01C 15/00 (2006.01)
Patent
CA 2453756
A compass adapted to measure direction and dip values with or without the 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 where 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.
Laamanen Carl Richard
Monteiro Rogerio Noal
Inco Limited
Smart & Biggar
Vale Inco Limited
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