细节
A 19th-century boxwood excise slide rule,
stamped LEWIS & BRIGGS: Makers . No 59 . BOW LANE Cheapside . LONDON, with four sliders, inscribed in Thomas Beale Alnwick Northumberland and John Fry, Berwick upon Tweed, 12in. (30.5cm.) long
stamped LEWIS & BRIGGS: Makers . No 59 . BOW LANE Cheapside . LONDON, with four sliders, inscribed in Thomas Beale Alnwick Northumberland and John Fry, Berwick upon Tweed, 12in. (30.5cm.) long