Lever escapements

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Escapements > Free escapements > Lever escapements

CPC:

Escapements ( electric or magnetic means for converting oscillatory to rotary motion in electromechanical time-pieces ) > Free escapements > Lever escapements

No child classifications to compare. This is a leaf node in both IPC and CPC.