Re: Dyptich sundial - help!

[rodwall1...@gmail.com]

Hi,
For those who are interested. A Boy Scout Sun Watch.
https://m.ebay.com.au/itm/RARE-1920-1922-ANTIQUE-BOY-SCOUTS-SUN-WATCH-COMPASS-ANSONIA-Co-NY/132733705686?hash=item1ee78b9dd6%3Ag%3AXFsAAOSw0lVa7z7H&_nkw=sun+watch+boy+scout&_from=R40&rt=nc

Regards,

Roderick Wall.

- Reply message -
From: "Michael Ossipoff" 
To: "Schechner, Sara" 
Cc: "Sundial List" 
Subject: Dyptich sundial - help!
Date: Sat, Aug 11, 2018 7:38 AM

Sara and John--

But it's said that the hour-lines for Babylonian, Italian, and co-Italian
hours are straight lines, as they are on all the other dials that I've seen
that have Babylonian &/or Italian hours.

Michael Ossipoff

On Fri, Aug 10, 2018 at 4:37 PM, Schechner, Sara 
wrote:

> I am camping at Stellafane with little connection, so will keep this brief
> until I return to civilization!
>
> The gnomon is adjustable for different latitudes.  The choice determines
> the correct horizontal scale to use around the compass.  The 2 pin gnomon
> scaphe sundial are for finding Italian and Babylonian (or Nuremberg
> hours).  The instrument with the spinning pointer is a wind vane.
> The instrument is made in Nuremberg in the early 17th century.
>
> Sara
>
> Sent from my iPhone
>
> On Aug 10, 2018, at 12:48 PM, Michael Ossipoff 
> wrote:
>
> Yes, the Boy Scouts of America at least used to sell a Compass-Oriented
> Dyptich dial with several concentric rings, each having different
> hour-lines, and with its string-gnomon adjustable for latitude, with
> several attachment-points on the vertical surface. I think it accommodated
> 3 latitudes. The hour-line rings were rectangular, it seems to me.
>
> Someone at this forum designed a universal Horizontal-Dial whose hour
> lines were curved lines originating from the gnomon-string's
> base-attrachment, with latitude-labeled concentric circles telling where to
> read the hour lines for the various latitudes.  ...and of course with the
> string-gnomon slidable in a vertical slot in the vertical surface.
>
> Michael Ossipoff
>
>
>
> On Fri, Aug 10, 2018 at 4:22 AM, Dan-George Uza 
> wrote:
>
>> Dear all,
>>
>> I've recently found this piece in a museum near me and I need your help
>> in dating it.
>>
>> Why are the hour marks offset? I suspect a correction for latitude. And
>> what do the two small circular dials on the bottom measure?
>>
>> Also what would be the purpose of the circular shape containing the
>> alidade? I suspect it has something to do with the winds.
>>
>> Any info will be highly appreciated.
>>
>> Thank you,
>>
>> Dan Uza
>>
>>
>>
>>
>> ---
>> https://lists.uni-koeln.de/mailman/listinfo/sundial
>> 
>>
>>
>>
> ---
> https://lists.uni-koeln.de/mailman/listinfo/sundial
>
>---
https://lists.uni-koeln.de/mailman/listinfo/sundial

Re: Dyptich sundial - help!

[rodwall1...@gmail.com]

Hi,
Some more interesting information on the Boy Scouts Sun Watch.

http://www.vintagerecipeblog.com/2016/03/the-ansonia-sunwatch-instructions.html?m=1

Note that the gnomon is not a string.

Regards,

Roderick Wall.

- Reply message -
From: "rodwall1...@gmail.com" 
To: "Michael Ossipoff" , "Schechner, Sara" 

Cc: "Sundial List" 
Subject: Dyptich sundial - help!
Date: Sun, Aug 12, 2018 7:31 AM

Hi,
For those who are interested. A Boy Scout Sun Watch.
https://m.ebay.com.au/itm/RARE-1920-1922-ANTIQUE-BOY-SCOUTS-SUN-WATCH-COMPASS-ANSONIA-Co-NY/132733705686?hash=item1ee78b9dd6%3Ag%3AXFsAAOSw0lVa7z7H&_nkw=sun+watch+boy+scout&_from=R40&rt=nc

Regards,

Roderick Wall.

- Reply message -
From: "Michael Ossipoff" 
To: "Schechner, Sara" 
Cc: "Sundial List" 
Subject: Dyptich sundial - help!
Date: Sat, Aug 11, 2018 7:38 AM

Sara and John--

But it's said that the hour-lines for Babylonian, Italian, and co-Italian
hours are straight lines, as they are on all the other dials that I've seen
that have Babylonian &/or Italian hours.

Michael Ossipoff

On Fri, Aug 10, 2018 at 4:37 PM, Schechner, Sara 
wrote:

> I am camping at Stellafane with little connection, so will keep this brief
> until I return to civilization!
>
> The gnomon is adjustable for different latitudes.  The choice determines
> the correct horizontal scale to use around the compass.  The 2 pin gnomon
> scaphe sundial are for finding Italian and Babylonian (or Nuremberg
> hours).  The instrument with the spinning pointer is a wind vane.
> The instrument is made in Nuremberg in the early 17th century.
>
> Sara
>
> Sent from my iPhone
>
> On Aug 10, 2018, at 12:48 PM, Michael Ossipoff 
> wrote:
>
> Yes, the Boy Scouts of America at least used to sell a Compass-Oriented
> Dyptich dial with several concentric rings, each having different
> hour-lines, and with its string-gnomon adjustable for latitude, with
> several attachment-points on the vertical surface. I think it accommodated
> 3 latitudes. The hour-line rings were rectangular, it seems to me.
>
> Someone at this forum designed a universal Horizontal-Dial whose hour
> lines were curved lines originating from the gnomon-string's
> base-attrachment, with latitude-labeled concentric circles telling where to
> read the hour lines for the various latitudes.  ...and of course with the
> string-gnomon slidable in a vertical slot in the vertical surface.
>
> Michael Ossipoff
>
>
>
> On Fri, Aug 10, 2018 at 4:22 AM, Dan-George Uza 
> wrote:
>
>> Dear all,
>>
>> I've recently found this piece in a museum near me and I need your help
>> in dating it.
>>
>> Why are the hour marks offset? I suspect a correction for latitude. And
>> what do the two small circular dials on the bottom measure?
>>
>> Also what would be the purpose of the circular shape containing the
>> alidade? I suspect it has something to do with the winds.
>>
>> Any info will be highly appreciated.
>>
>> Thank you,
>>
>> Dan Uza
>>
>>
>>
>>
>> ---
>> https://lists.uni-koeln.de/mailman/listinfo/sundial
>> 
>>
>>
>>
> ---
> https://lists.uni-koeln.de/mailman/listinfo/sundial
>
>---
https://lists.uni-koeln.de/mailman/listinfo/sundial