Brearley, Harry Chase, 1870-, Ingersoll, Robt. H., & Bro · New York, Pub. by Doubleday, Page & Co. for Robert H. Ingersol & Bros. · leaf 331
bal-ance-staff, of course, turns just as the balance turns and with it thejewel-pin. And the lever is just long enough and is so placed that everytime the balance turns, the jewel-pin fits into the slot between theprongs of the lever-fork carrying it first one way, and then, as thebalance comes… … <iA (ty)(todern Watch <JtCovement 1 First or tyi:CainWheel towluchmainspringis attached. 6 Pallet, laith ToiletJev>eli. 2 Second or Qenter Wheel. y Jl^er. 3 Third Wheel. 8 balance. 4 Fourth Wheel. 9 Hair Spring. 5 escape Wheel. i o %oller tooth before the other pallet-jewel is thrust in to…
Time measurements · Clocks and watches
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