External stair tower (Offshore Oil Rig and Platform)
A braced external stair tower between deck levels: two flights of grated treads with a half landing between them, a top landing, handrails throughout and a blank notice plate on one leg.
- 格式
- GLB
- 文件大小
- 168 KB
- 三角面
- 4,024
- 许可
- CC0 1.0