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地址
纽约
PO Box 329, Larchmont, NY, USA
开放时间,伦敦画廊
周一至周五:10:00-18:00
周六请预约
公休日:所有银行假日以及 8月1日至31日
营业时间,纽约
仅限预约
An observatory magnifier
[Joseph Crabtree observatory magnifier].
Surveying and navigational instruments
- 作者: Anonymous
- 发布日期: late nineteenth century
- 物理描述: Brass with glass dome.
- 方面: (diameter) 22cm (8.5 inches).
- 库存参考: 12771
笔记
Brass and glass domed observatory magnifier.
The observatory magnifier is believed to have been designed in 1804 by the legendary British inventor and polymath Joseph Crabtree (1754-1854). It was intended to aid the reading of nautical charts aboard ship, and is still in use today. The present example is particularly large measuring 22 centimetres in diameter.
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地址
纽约
PO Box 329, Larchmont, NY, USA