Calibers

Introduced: September 1968

IPC and CPC are identically structured here. All 8 subcodes exist in both systems.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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G04B 33/02 Circular calibers IPC+CPC Available in IPC and CPC
G04B 33/04 Non-circular calibers IPC+CPC Available in IPC and CPC
G04B 33/06 of extremely flat shape IPC+CPC Available in IPC and CPC
G04B 33/08 in which the gear train is arranged in different planes, e.g. parallel or inclined to each other (G04B33/10 takes precedence ) IPC+CPC Available in IPC and CPC
G04B 33/10 with seconds hand arranged in the centre of the dial IPC+CPC Available in IPC and CPC
G04B 33/12 for extremely long running times IPC+CPC Available in IPC and CPC
G04B 33/14 Calibers of which the mainsprings or barrels are easily removable (mainsprings G04B1/14; barrels, arbors G04B1/16 ) IPC+CPC Available in IPC and CPC
G04B 33/16 with arrangements affording protection of the clockwork against damage as a consequence of a rupture of the mainspring IPC+CPC Available in IPC and CPC