Survey Marker (Radio Telescope Array and Field Station)
A survey marker post: a small concrete footing, a steel post with a blank red plate and the levelling disc on top.
- 格式
- GLB
- 文件大小
- 7 KB
- 三角面
- 96
- 许可
- CC0 1.0
A survey marker post: a small concrete footing, a steel post with a blank red plate and the levelling disc on top.