It's an amazing device, especially for its time, & its
mechanical-construction. I'd never heard of it till today.
When you google "Giovanni Antonio Amedeo Plana, perpetual calendar, Turin",
select the google link that says: "
The mechanism of Plana's Calendar - IMEKO
That looks like more than a
Though Steve objected to something that I said in an earlier post, my own
reaction to what I said was much worse than anyone else’s criticism could
be.
.
At first I didn’t understand why I didn’t like what I’d said. But though I
meant no implied criticism of a country or its overall population,
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While calendars are a current topic, please can
Members of this list who follow my 'nearly-weekly' news updates about sundials,
dialling news and comment and related matters (it can be found at my 'SunInfo'
webpage which is at www.ppowers.com/sun.htm) will have seen the latest entry
about the interesting Francis West (1789–1867) sundial
