日期: 1760
博物馆: Naval Museum (Madrid, Spain)
术: 铜
该仪器用于计算无法到达的距离和高度,测量水平角度,绘制图表或地形图,并进行三角计算. 它有一个从0到130度的半圆形校正,有一个切出中心. 相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相接相相接相接相接相接相相相接相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相相 基座以一个已毕业的标尺相接壤,该标尺用于在边缘上标出分钟并从地形测量的角度下注. 为了创建图表,它被用在一个大约一米平方的板上,在三脚架上支撑,上面是所要绘制的纸张.
艺术家 |
|
|---|---|
下載 |
|
權限 |
免費的非商業用途。 見下文。 |
 |
This image (or other media file) is in the public domain because its copyright has expired. However - you may not use this image for commercial purposes and you may not alter the image or remove the watermark. This applies to the United States, Canada, the European Union and those countries with a copyright term of life of the author plus 70 years.
|
Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may
not be in the public domain in these countries, which moreover do not implement the
