8 Sets of Architect’s Drafting Instruments

1) "Compass Supérieurs", France, c. 1900, Brevetés S.G.D.G., wood case, lid lined with green silk, a removable tray lined with green velvet, 12 instruments of brass and steel, with 2 compasses, one with replaceable tip for inserting the drawing instruments, case dimensions 18 x 11 cm. - 2) 2 Riefler compasses cases, c. 1920-30, professional models, compartments lined in velvet, both complete. - 3) Beam compass, A. West & Partners, England, c. 1920, in box. - 4) Early compass set, c. 1840, probably England, brass, steel and bone, with proportional ruler. - 5) "Compas Perfectionnes", France, c. 1900, steel and nickel-plated brass, with proportional compass and half-circle protractor. - 6) Dutch compass set, c. 1900, maker not legible, unusual design of the instruments, complete. - And: 7) Beam compasses, unmarked, c. 1900, length 17.5 cm, in case.

布雷克拍品等级是为了方便竞买人判断拍卖品的成色而设置的。布雷克等级用1到6级来标注外观和功能的成色，(从非常好到非常差)。 在目录图册里用括号里的2个数字来表示，前一个数字表示外观成色的级别，后一个数字表示功能成色的级别。如(3/2)表示外观成色是3(满意的)，功能成色2(好)。 成色 定义参照下列标准： 1 - 非常好 (未使用过，没有使用痕迹) 2 - 好 (新，极少的使用痕迹) 3 - 满意的 (普通的使用痕迹) 4 - 及格的 (明显的使用痕迹，某个非主要部件是后配的) 5 - 有缺陷的 (极明显的使用痕迹, 某个主要部件是后配的，功能上有缺陷，需要修理) 6 - 非常差 (严重破损, 缺少重要部件)