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Rhyolith: Millers Falls no.97 with nearly no play
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Rhyolith: Yankee No.1555 with acceptable play
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Rhyolith: Yankee No.1545 with too much play
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Rhyolith: Partially Missing cog/tooth
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Rhyolith: Very damaged/Missing Springs
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Rhyolith: North Brothers "Yankee" No.1445 (missing tooth)
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Rhyolith: Un-damaged Springs
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Rhyolith: Damaged Springs
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Rhyolith: Un-worn Cogs
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Rhyolith: Worn Gear Teeth