The compass card system

The card system is the most important and at the same time most sensitive part of a magnetic compass. The centre, the so-called float, keeps the card in balance. The float contains a ring magnet which is magnetized in such a way that the printed "north" of the card also points in the direction of the magnetic north of the earth.

The card system is resting with a pin/pivot on a jewel/sapphire. This allows a frictionless bearing of the card system, while the compass fluid dampens the movements. This damping guarantees a low oscillation period and a low swirl error. These parameters are determined for each compass on our test bench before a quality certificate is issued.

With spherical compasses, the round glass dome and the liquid produce an enlargement, so that a 100mm card has an apparent diameter of 120mm.

Related products
ZETA/2 Surface mount ZETA/2 Surface mount
From €556.00 *
ZETA/1 Flush mount ZETA/1 Flush mount
From €556.00 *
IOTA/1 Flush mount IOTA/1 Flush mount
From €671.00 *
IOTA/2 Surface mount IOTA/2 Surface mount
From €710.00 *
DELTA/1 Flush mount DELTA/1 Flush mount
From €1,006.00 *
DELTA/2 Surface mount DELTA/2 Surface mount
From €1,006.00 *
DELTA-PILOT combined DELTA-PILOT combined
Price on request
BETA/1 Flush mount BETA/1 Flush mount
From €1,099.00 *
BETA/2 Surface mount BETA/2 Surface mount
From €1,099.00 *
From €1,554.10 *
€1,741.00 *
From €1,554.14 *
From €525.98 *