Timing manipulations /
Hamilton, James L.,
Timing manipulations / by James L. Hamilton. - iv, 63 pages : illustrations ; 22 cm
Reprint: Denver : Roberts Pub., 1950.
Clocks and watches--Design and construction.
Balance springs.
Clock and watch making.
Watch (general) USA hairspring escapement practical AWI Press Hamilton, James L. Adjust
Timing manipulations / by James L. Hamilton. - iv, 63 pages : illustrations ; 22 cm
Reprint: Denver : Roberts Pub., 1950.
Clocks and watches--Design and construction.
Balance springs.
Clock and watch making.
Watch (general) USA hairspring escapement practical AWI Press Hamilton, James L. Adjust