細節
AN EARLY 18TH-CENTURY PART-SET OF ENGLISH BOXWOOD NAPIER'S BONES,
UNSIGNED, WITH BROAD ROD FOR CUBES AND SQUARES, AND NINE (OF TEN), MULTIPLIER RODS IN A TABULAT WITH SINGLE FIXED MULTIPLIER ROD, CONTAINED IN THE ORIGINAL BOXWOOD CASE WITH SLIDING COVER, WITH INCISED GEOMETRIC DESIGNS ON THE FRONT AND BACK -- 3.5/8INM. (9.2CM.) WIDE, AND AN ABACUS IN CASED CASE -- 7IN. (17.8CM.) (2)
UNSIGNED, WITH BROAD ROD FOR CUBES AND SQUARES, AND NINE (OF TEN), MULTIPLIER RODS IN A TABULAT WITH SINGLE FIXED MULTIPLIER ROD, CONTAINED IN THE ORIGINAL BOXWOOD CASE WITH SLIDING COVER, WITH INCISED GEOMETRIC DESIGNS ON THE FRONT AND BACK -- 3.5/8INM. (9.2CM.) WIDE, AND AN ABACUS IN CASED CASE -- 7IN. (17.8CM.) (2)