分享一张图
http://25.media.tumblr.com/tumblr_ma03zqqjhd1qhsqm1o1_1280.jpg在一个艺术图站看到这种绘画，似乎体现了米国海军早期的火控设备，所以发过来。
解说词是：
Colorized stereoscopic photograph of a view from the bridge of the battleship USS Minnesota (BB-22), c. 1909
Other unidentified members of Roosevelt’s Great White Fleet are also visible.
我对此不熟，权当抛砖引玉吧。 只是彩色的立体照片而已
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