Wire Latest change 2017-09-03
I use piano wire of 0.75 mm for the pendulum at home, and 0.925 mm (gauge 16) for the pendulum in the chapel.
As piano wire has a good remembering of being rolled up during shelf
time there may be an effect on the pendulum's behaviour. I intend to
investigate that by rotating the top clamp and see if there is any
difference in the pattern of CW- and CCW ellipse. That investigation
will take many days, perhaps weeks, and is planned for winter 2017.