Collection of Microscopes and Telescopes

1) Folding magnifying glass, with brass mount and 3 lenses, Ø 4/5 in. – 2) 3 linen testers, brass, heights 1, 1 1/8 and 1 ¾ in. – 3) Pocket microscope, for preparations on glass slides. – 4) 3 single-draw pocket telescopes, brass, two with leather-covered tube, one with mahogany-covered tube. – 5) Brass telescope, c. 1880, unmarked, 4 extensions, extended length 15 in., retracted 4 ¾ in., screw-on caps for objective and ocular, clear optics. – 6) Astronomical telescope ocular, similar to Carl Zeiss, brass, 3 elements, rear group extendable, Ø 2 ½ in. – 7) Binocular, c. 1900, by Heinemann & Co., Naples, in leather bag. – 8) Telescope, c. 1890, probably England, 3 extensions, extended length 15 3/4 in., retracted 6 in., mahogany-covered tube, with cap, clear optics. – 9) Monocular opera glass, 2 draws, bone body (1 stress crack), length extended 4 in., in need of cleaning. – And: 10) Table telescope, c. 1890, unsigned, brass, on tripod, length 26 1/3 in.

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)