Calibre:
Type of movement.

Cannon pinion:
Part of the motion work. Attached to the minute wheel arbor. Drives the intermediate wheel.

Centre wheel:
Part of the gear train. Transmits power from the barrel wheel to the minute wheel.

Click catch:
Unit consists of ratchet wheel, ratchet and ratchet spring. Locks the barrel to the gear train. In the opposite direction it allows the clock to be wound.

CNC:
Computer Numeric Controlled. Manufacturing of parts with computer controlled turning and milling machines.

Compensation pendulum:
A specially designed pendulum that does not change its length when temperature changes.

Compensation tube:
Part of the pendulum. Sits on top of the regulation nuts and compensates for the linear expansion of the pendulum rod.

Concentric:
Two parts or circles have the same centre.

Concentricity error:
Result of production tolerances. Due to precise manufacturing in our workshop we are able to reduce the concentricity error to 0.02 millimetres.

Counter weight:
The minute hand is a unbalanced lever that absorbs power for half an hour, and supplies power for half an hour. To compensate this we installed a counter weight on the cannon pinion opposite to the hand.

Crutch:
Lever that connects the pallet arbor with the pendulum.

Cycloid:
Generating circle. A geometrical line, that appears when rolling a circle on a geometrical contour. Has served well for gears in clocks and is still used today.

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