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.
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5 | Fig. 4. The balancing | |
zones | ||
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