In this video I show how the OWI edge 535 robotic arm can reach a same position 4 times, which is a requisite for it to be used as an autosampler for liquid samples. Both the arm and the sample tray were bolted to a wood board in order to make their relative position fixed.
More on this topic:
http://intl-jla.sagepub.com/content/e...
http://www.sciencedirect.com/science/...