Related terms:
detent escapement
master pendulum
audio technica
moving magnet
mechanical clock
deadbeat escapement
slave pendulum
duplex escapement
lower quadrant type
volta associates
most restrictive
escapement mechanism
phono input
edison speaking phonograph
railway semaphore
gravity lever
undulations
pierre le roy
temperature compensation
wing would
starting signal
Wikipedia sources:
John Arnold
Escapement
Phonograph
Railway semaphore signal
Scissors
NASA AD-1
Context for words:
pivoted
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