Scott Russell linkage. Turn linear motion through 90 degrees.

A simple linkage that does the somewhat remarkable feat of turning linear motion through 90 degrees.
More information is available here: http://www.inventhp.com/Scott_Russell_Straight_Line_Generator.html
The model was made from Diamond Age PLA on an Ultimaker 1. Designed in MOI.
A short video is here: http://youtu.be/gv5ESOkvgEU
And a short animation created in Blender 2.76 using the Phsyics engine is here: https://youtu.be/BIS5H9sDgvA