Here is a new one I had never seen before.... While not the same experiment, the set-up is similar to the Apollo 17 Heat Flow Experiment where a wrist watch was used for timing, but in this instance, an Accutron Rail Road watch was used for experiment timing. Here is an image of the experiment taken onboard the Apollo capsule during the Apollo-Soyuz Test Project in July 1975. Here is two images from the Electrophoresis technology: Experiment MA-01 report where I was able to locate information on the timing set-up. After a quick ebay scan and payment of $110 this cool little watch is a great addition to the collection. This 1974 Rail Road Accutron is humming along nicely only loosing about 1 sec per day after all these years. While this case has a very slight variation from the one used, the dial set-up is the same as the experiment watch which seems to vary a bit over the different Rail Road models produced during this time period.