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The Cog Gear

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The large-toothed gear in the center is the cog, engaged in the cog-way.
There is a larger-diameter, smaller-toothed gear on either side of the cog gear.
The counterweight opposite the driving rod is the brick-colored object on the left.  July 16, 1998


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Photograph Copyright © 1998 Bill Spencer
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Last modified: 1999-01-17 Rev. 1