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XGeology Geological Compass DQL-2A

XGeology Geological Compass DQL-2A

from USA
to Antigua and Barbuda
in 5-8 days
At your doorstep by May 16  to May 19 with standard delivery

Description

    • Imported from USA.
    Parameters: Damping time of needle : 30-60s Dial scale : 1° Precision of circle air level : 30´± 5´/2mm(20℃) List of items: A geological compass A holster An English manual Product details: Length : 77.5mm Height : 20mm Width : 66mm N.W. : 0.2kg Package details: Length :130mm Height : 100mm Width : 80mm VWK : 0.21kg(length*width*height/5000) G.W. : 0.5kg Geomag FAQ: -5c.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. Note: in order to make normal use of DQL-2A in the Southern Hemisphere.The geological compass copper circle on the North, rather than you see in the picture on the South. Magnetic Declination: Magnetic declination, sometimes called magnetic variation, is the angle between magnetic north and true north. Declination is considered positive east of true north and negative when west. For more information, please see : ngdc.noaa
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    XGeology Geological Compass DQL-2A

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