Quote:
Originally Posted by slob
...or in the 21st century, use an app that logs your phone’s accelerometer.
ps I did edit the apparent op to explain, since at creation, my post was the one with the last timestamp, so was at the end of the thread
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No worries Rob, I see what you did. Just didn't expect this from a throwaway comment!
...And wow! Phones have accelerometers?? Thinking on, a heavy-ish bead on a piece of cotton sellotaped on a mirror, might do the trick? But still dangerous to try and look at it too much in a bend.