Front view of a Lord Elgin watch housing a Cal. 722. Copyright: J. Runciman, FNAWCC
|
Rear view of a Lord Elgin watch housing a Cal. 722. Copyright: J. Runciman, FNAWCC
|
Calibre 722 from the balance side. Copyright: J. Runciman, FNAWCC
|
Balance Side. On the right, a standard Cal. 722. On the left is what is believed to be a prototye Cal. 722; there is no wording on this movements and the plates are roughly finished. Copyright: J. Runciman, FNAWCC
|
Dial Side. On the right, a standard Cal. 722. On the left is what is believed to be a prototye Cal. 722; there is no wording on this movements and the plates are roughly finished. Copyright: J. Runciman, FNAWCC
|
Side view of Cal. 722. Copyright: J. Runciman, FNAWCC
|
Coils from (top to bottom): Cal. 722, unusual Cal. 725 becuase it has slots for the mounting screws rather than holes, normal Cal. 725. Copyright: J. Runciman, FNAWCC
|
Diodes from (top to bottom): Cal. 722, Cal.910, Cal. 910. Copyright: J. Runciman, FNAWCC
|
Comparison of size of early electric movements: top left LIP Cal. R27, top right Elgin Cal. 722, bottom right Elgin Cal. 910, bottom left Hamilton Cal. 505. Copyright: J. Runciman, FNAWCC
|