A Single Gear System that Changes Speed
Should be interesting to any gearhead:
Setting a Hermle w1217 Quartz Movement
Here's a great post from Instructables on how to set the time and chime on an old w 1217 Hermle movement. This German-made movement was a pioneer in bringing a "real-sounding" chime to a quartz movement. If your older clock has one of these movements, and it doesn't work, it's more cost-effective to replace it with a more modern mechanism. But, if you just need to set it, here are some good step-by-step instructions on how to do so. From Instructables : Top left are the STOP and START buttons. Three knobs along the left side are also buttons. A knob in the center sets the analog hands. Upper right corner has the Make (Hermle) and Model# (1217) Lower right is the battery compartment. - The STOP button stops the analog movement and resets all digital settings. - The START button begins keeping time after you're done setting the clock. - Knob 1 sets the time in the digital portion of the clock. Turn the knob to the number you wish to set and press it until you...
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