Fritts, Charles Edgar. [from old catalog] · Philadelphia, The Keystone · leaf 215
THE SPRING-DETENTCHRONOMETER ESCAPEMENT. … THE WATCH ADJUSTERS MANUAL. 203 these last parts are underneath the impulse roller ?V, they areshown in dotted lines. The escape wheel ew\=> shown as locked,by tooth J resting on the locking stone //. The tooth 2 has justdropped off the impulse pallet //, and tooth i is ready to dropupon the…
Clocks and watches
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