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bensondoc: FH Grubb
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bensondoc: Dial back
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bensondoc: Blue roller
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bensondoc: Ready to roll
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bensondoc: cable drive
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bensondoc: Dial mechanism below
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bensondoc: Worm gears
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bensondoc: Worm drive from top
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bensondoc: Dial mechanism, from top
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bensondoc: Dial drive layshaft
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bensondoc: cup and cone bearings
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bensondoc: Dial shafts from top