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Event: Jefferson paid dolland 2-18 pounds for instrumentsDates: 1786-04-04 - 1786-04-04Short Description: Jefferson paid 2-18 pounds to Dolland for a hydrostatic balance, a scioptric ball, a Robinson’s scale, two double convex lenses and a compass needle. Jefferson would later give the hydrostatic balance to his grandson in 1808. Event Type:Commercial Transaction Record created by Russell Deppe |