Hi Dave,
The design certainly predates the discovery of bifilar dials. But what
the horizontal wire does isn't clear. And the purpose of the fixed
gnomon was going to be my next question, too. Perhaps for Islamic prayer
times? Bill Gottesman: do you know what it is for?
best wishes,
Peter
On 20/08/2024 23:18:01, Dave Bell wrote:
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It’s certainly an interesting dial. Is it primarily a bifilar type,
with the crossed wires? What’s the purpose of the fixed gnomon then?
Dave
Sent from my iPhone
On Aug 20, 2024, at 6:05 AM, Simon WS <[email protected]>
wrote:
A clue for me was the fact it had two leveling weights. The Asian
dials are often well made, fairly often not accurate. I included
examples in my book.
Simon Wheaton-Smith
On Mon, Aug 19, 2024, 23:58 Peter Mayer <[email protected]> wrote:
Thanks Bill,
I imagine this is an Indian replica. But it appears to have been
reasonably carefully made.
best wishes,
Peter
On 20/08/2024 7:20:18, Bill Gottesman wrote:
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I appreciate Geoff's answer, thank you. I bought this model (I
am pretty sure) 20 years ago or so on the internet. It was new,
fairly inexpensive, made somewhere in Asia. I would be wary if
the auction lists this example as an antique.
-Bill
On Mon, Aug 19, 2024 at 3:22 PM Geoff Thurston
<[email protected]> wrote:
It seems that the lower scale measures time in
"ghatis". Ghatis are an ancient Indian unit of time that
were used to divide a day into 60 parts so that one ghati is
approximately 24 minutes. Compare this one from the UK Royal
collection:
https://www.rct.uk/collection/11215/equatorial-sundial
<https://www.rct.uk/collection/11215/equatorial-sundial>
Best wishes,
Geoff
On Mon, 19 Aug 2024 at 12:19, Peter Mayer
<[email protected]> wrote:
Hi,
This dial is coming up for auction locally. Looks quite
nice.
The upper scale is clear enough...but I am puzzled by
the lower scale:
best wishes,
Peter
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