In the Dutch Maritime Museum in Amsterdam there are several dividers which
also have a sundial insription along several astronimical sliderule
inscriptions. No pictures available on the web but only Dutch descriptions.
If you happen to be in Amsterdam it is a visit worth!
At 17:26 18-6-00
In a message dated 6/17/00 3:39:51 PM Eastern Daylight Time, [EMAIL PROTECTED]
writes:
I have a question. have you ever heard of or seen any one
use a carpenter's square to tell time? If so please let
me know how it is done.
I don't have the answer, but I can imagine that it would be
This rings a bell with me. If memory serves me correctly, I recall seeing
some Renaissance mathematical instruments like sectors or folding squares
that had hour scales on them. These were scales not for laying out sundials
(dialling scales were not uncommon on these instruments), but were
