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.

The fields marked with * are required.

I have read the data protection information.

Related products
ZETA/2 Surface mount ZETA/2 Surface mount
From €486.00 *
From €408.40 Plus VAT
ZETA/1 Flush mount ZETA/1 Flush mount
From €486.00 *
From €408.40 Plus VAT
IOTA/1 Flush mount IOTA/1 Flush mount
From €586.00 *
From €492.44 Plus VAT
Hint!
IOTA/2 Surface mount IOTA/2 Surface mount
From €621.00 *
From €521.85 Plus VAT
SIGMA Bracket mount SIGMA Bracket mount
€1,073.00 *
€901.68 Plus VAT
DELTA/1 Flush mount DELTA/1 Flush mount
From €880.00 *
From €739.50 Plus VAT
DELTA/2 Surface mount DELTA/2 Surface mount
From €880.00 *
From €739.50 Plus VAT
BETA/1 Flush mount BETA/1 Flush mount
From €960.00 *
From €806.72 Plus VAT
BETA/2 Surface mount BETA/2 Surface mount
From €960.00 *
From €806.72 Plus VAT
BETA/4 Overhead flush mount BETA/4 Overhead flush mount
€1,417.00 *
€1,190.76 Plus VAT
BETA/4 Overhead surface mount BETA/4 Overhead surface mount
€1,417.00 *
€1,190.76 Plus VAT
TYPE/11 TYPE/11
 
Price on request
 
TYPE/12 TYPE/12
 
Price on request
 
TYPE/21 TYPE/21
 
Price on request
 
TYPE/51 TYPE/51
€865.00 *
€726.89 Plus VAT