I’d forgive you if you thought this was a Rolex 6611 Day-Date after a quick glance. A 1970 Day-Date Copy from A Japanese Camera Maker Post – A short axle extending from the main plate on which a wheel can rotate. Motion Works – The gears that rotate the minute and hour hands using power transmitted from the going train. Minute Wheel – A dial-side wheel driven from the cannon pinion that in turn drives the hour wheel. Main Plate – The central layer of the movement to which all other components are fixed. Keyless Works – The manual winding, time and date setting mechanism attached to the crown and stem. Hour Wheel – A dial-side wheel that rotates the hour hand. Going Train – The gears that run from the barrel with main spring inside and end in the escapement wheel. It is driven from the third wheel and in turn drives the escape wheel. It rotates once per hour like the second/center wheel.Ĭenter Wheel – The second wheel in the going train, driven from the barrel and rotates once per hour.įourth Wheel – The fourth wheel in the going train. Restoration Workbench 1970 36mm Ricoh 040121 MedallionĭecemTechnical Terms Used in this Articleīalance – The wheel attached to the hairspring that oscillates back and forth as part of the escapement and is responsible for the accuracy of the watch’s time-keeping.Ĭannon Pinion – A gear that fits tightly over the center wheel/second wheel axle to transmit power from the movement side to the dial side of the watch.
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