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Rare vintage Ratcliffe's patent spring calculating slide rule,computer Rochdale
$69.05 USD

Sold on: 2014-Jan-05

Marketplace: eBay
5 Treasure
0 Trash
100%


Detail:

In its original box is this English "Ratcliffe's Spring Calculating Slide Rule" produced by J.S.Ratcliffe, Crawford Spring Works, Rochdale England. It would have been used in the spring making industr...




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