Eyepieces, Objectives and Accessories for Microscopes by Various

1) Drawing eyepiece, Ernst Leitz, Wetzlar; in case with enameled plaque of the Greifswald Zoological Institute. – 2) Microscope tool set by A. Rüprecht in Vienna, in mahogany case. – 3) Measuring eyepiece, unmarked, brass, with lateral micrometer screw. – 4) Bull's eye, brass, with stand, height-adjustable. – 5) Insect box, boxwood, screw cap, Ø 42 mm. – 6) Dark field device, in brass box. – 7) Measuring plate by C. Reichert in Vienna, nickel-plated, graduation 1/100 mm, dimensions 75 x 25 mm, in case. – 8) Swiveling brass microscope slide. – 9) Cedar oil, glass bottle with spatula, in threaded wood tube, used as immersion fluid in light microscopy. – And: 10) 5 eyepieces, 6 objectives and 6 objective sleeves, made by Leitz and Zeiss, among others.

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)