Salomons, David, Sir, 1851-1925 · London : Printed for the author · leaf 194
Vo. ;. Works at Back. Watch No. i _• i. The repeating main spring is seen at top on the right.The indepen lanl econds wheel (very thin) is shown at\1 > llirt ^tar wheel. Parachute also shownabove balance pivot. … No. 6. Front. Watch No. 14S.
Breguet, Abram Louis, 1747-1823 · Clocks and watches -- France History
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