Suunto Tandem User Manual download pdf (Page 8)

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.

Fig. 4. The balancing

zones

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Suunto Tandem User Manual Page 8