Some of you may know that another of my hobbies I am pretty passionate about is vintage photography, especially 3D stereocopic forms. I thought I would post a couple of vintage stereo cards of the steam shovels working at the Panama canal. These are similar to the one being assembled currently. When I went over to see it at steam school it reminded me I had these and how similar they were. These are on railroad trucks but other things are fairly close. I imagine most will not be able to view these in 3D as intended unless you have a stereocope handy. You can train your eyes to fuse the two images, but it is easier to start with a stereoscope.
Hope you enjoy
Darren
Hope you enjoy
Darren