Antique C19th Sykes Hydrometer by Thomas Gill London + slide rule, thermometer $72.16 USD Sold on: 2013-Jan-06 Marketplace: eBay 5 Treasure 0 Trash 100% Detail: Genuine, period. Good condition. Weight numbered 10 missing. Hydrometer and weights numbered 7030 - hydrometer also P51. Boxwood slide rule stiff. Hinges and catches secure. Base lifted in one corner ... More Relevance Historical Items
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