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7
BEARING COMPASS
Construction
The bearing compass is designed to combine extreme accuracy with ease and speed
of operation. The card is supported by a jewel bearing and it is immersed in a
dampening fluid, giving vibrationless, smooth movement. The compass has been
given permanent antistatic treatment.
Inclination - balancing
The compass card is balanced to correspond to area within which the compass is
used. When using the compass elsewhere (e.g. on trips abroad) the change of the
vertical magnetic field could make the compass card dip and this may cause
difficulties in taking the bearing. The balancing zone (see Fig. 4), if other than one, is
indicated on the back of the instrument below the serial number, contact your dealer
for details.
2
1
4
3
5
Fig. 4. The balancing
zones