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The compass is a must have tool for anyone working in the field of earth science or geological surveying,
mapping or for navigational use. The compass performs basic tasks such as orientation, while the inbuilt clinometers allow geologists to measure the dip of rock beds or the height of geological and geographical features as well as angles.
The design for the geological Compass effectively reduces needle dip when professionals travel to different hemispheres. (Call us for the special balancing required for absolute precision in distant areas.) Powerful Alnico V magnets are mounted to a polished, cupped sapphire jewel bearing, allowing for smooth needle movement.
Alnico V magnets for quick magnetic north needle alignment
Vertical angle measurements to +/-90° or 100% grade
A percent grade scale with increments of 5%
Induction dampened needle for quick, accurate readings
Sapphire jewel bearing allows for smooth needle movement
Magnetic declination adjustment allows for east or west declination settings to +/-180°
Short and long sights for increased accuracy when sighting azimuth or vertical angles
Precision aligned mirror with convenient "see-through" sighting capability
Cast aluminum body makes the compass t nearly indestructible
Leather case included
What happens to my compass in the southern hemisphere? For a compass to work properly, the compass needle must be free to rotate and align with the magnetic field. The difference between compasses designed to work in the northern and southern hemispheres is simply the location of the "balance", a weight placed on the needle to ensure it remains in a horizontal plane and hence free to rotate. In the northern hemisphere, the magnetic field dips down into the Earth so the compass needle has a weight on the south end of the needle to keep the needle in the horizontal plane. In the southern hemisphere, the weight needs to be on the north end of the needle. If you did not change the weight, the needle would not rotate freely, and hence would not work properly.