Perrin & Charnley bell

David Bryant david at b...
Sat Apr 3 19:18:45 BST 2004

The Perrin and Charnley bell was discussed recently. I recently took a
picture of it and have now had the film developed - I;ve put the picture on
the web at

Presumably the coiled springs between the bell and its stand are to prevent
vibration being transmitted between bell and stand and afecting the
measurements which were taken.


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