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EDWARD ROBERTS, 18TH CENTURY
细节
AN EVERARD'S PATTERN SLIDE RULE
EDWARD ROBERTS, 18TH CENTURY
of boxwood with calculating scales on the four sides and liquor tables on the back of the three slides, signed beneath one slide,* EDWD. ROBERTS Maker in Dove Court in Old Jewry LONDON *
9in. (23cm.)
EDWARD ROBERTS, 18TH CENTURY
of boxwood with calculating scales on the four sides and liquor tables on the back of the three slides, signed beneath one slide,* EDWD. ROBERTS Maker in Dove Court in Old Jewry LONDON *
9in. (23cm.)