mystery object
Hi Everyone: The Campbell Stokes sunshine recorder that was identified by several respondents was sold yesterday at the Skinner auction for $999. I assume we did the seller a favor by identifying the object. Fred Jaggi --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Fw: Mystery object
Campbell Stokes sunshine recorders are still available - I have one that I bought a few years ago. They are made by Fairmount Weather Systems of Cambridge, UK. Their web site is: http://www.fairmountweather.com/ Mike Shaw 53.37N 3.02W www.wiz.to/sundials --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Mystery object in 3-D
I stumbled across a cool 3-D view of a campbell stokes recorder here: http://www.ems.psu.edu/~fraser/qtvr/ssr.html You have to permit the Active-X control to view it -Bill G. --- https://lists.uni-koeln.de/mailman/listinfo/sundial
RE: Mystery object [SEC=UNCLASSIFIED]
Hi all, Yes, that is exactly what it is, a Campbell-Stokes sunshine recorder. And yes they are still used by Weather Services. At least we still use them here in Australia at the Bureau of Meteorology. Basically a curved piece of chemically impregnated cardboard is placed in the holder spanning the equator of the globe. The globe acts as a burning lens to focus the sunlight into a point onto the card. This burns a hole into the card (without it catching fire). This point tracks along the card as the sun moves across the sky. When cloud is present the burning effect is suppressed, leaving gaps in the trace. The card is marked with hour indications, so the number of hours of sunshine can be determined. There are different cards for the different seasons. Cheers Hank > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Bill Gottesman > Sent: Wednesday, 17 October 2007 12:37 > To: Dave Bell; Frederick Jaggi > Cc: Sundial Sundial List > Subject: Re: Mystery object > > According to www.campbellsci.ca/Museum_Radiation_1_F.html , > it is a Campbell-Stokes sunshine recorder. Apparantly, it is > still in use, and still available. > -Bill > > > - Original Message - > From: "Dave Bell" <[EMAIL PROTECTED]> > To: "Frederick Jaggi" <[EMAIL PROTECTED]> > Cc: "Sundial Sundial List" > Sent: Tuesday, October 16, 2007 10:32 PM > Subject: Re: Mystery object > > > > Frederick Jaggi wrote: > >> Hi Everyone: > >> > >> Here's a mystery object from the current Skinner auction. > Could it be > >> sundial related? > >> > http://www.skinnerinc.com/asp/fullCatalogue.asp?salelot=2383++93 > >> +&refno=++691521&saletype= > >> Fred Jaggi > >> --- > >> > > Or, even a sundial itself! > > First, a short link, that won't get trashed by email programs: > > http://tinyurl.com/3yqcjk > > > > It's a crystal globe that acts as a lens to focus a sun > spot onto the > > curved brass curved. > > The plate is engraved for hour lines and declination curves... > > > > Dave > > --- > > 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: Mystery object
Thanks Bill, I recognized the mystery object as a sunshine recorder but did not have the details. Thanks for the link on the Campbell-Stokes. This devices typically burned a line on a paper strip showing the number of hours of sun each day. This was an important measurement for weather stations to collect specific weather data for various locations. I once lived in an area that recorded single digit totals of hours of sunshine per month during the whole month of November. This was not a good location for sundials but I left several in place. Sundials work best when there are over 300 days of sunshine per year and now is the time to seek such sunny locations. I just completed my booking on the Algarve in Portugal and Andalucía in Spain next month. There the sun shines in November. Regards, Roger Bailey www.walkingshadow.info - Original Message - From: "Bill Gottesman" <[EMAIL PROTECTED]> To: "Dave Bell" <[EMAIL PROTECTED]>; "Frederick Jaggi" <[EMAIL PROTECTED]> Cc: "Sundial Sundial List" Sent: Tuesday, October 16, 2007 8:07 PM Subject: Re: Mystery object > According to www.campbellsci.ca/Museum_Radiation_1_F.html , it is a > Campbell-Stokes sunshine recorder. Apparantly, it is still in use, and > still available. > -Bill > > > - Original Message - > From: "Dave Bell" <[EMAIL PROTECTED]> > To: "Frederick Jaggi" <[EMAIL PROTECTED]> > Cc: "Sundial Sundial List" > Sent: Tuesday, October 16, 2007 10:32 PM > Subject: Re: Mystery object > > >> Frederick Jaggi wrote: >>> Hi Everyone: >>> >>> Here's a mystery object from the current Skinner auction. Could it be >>> sundial related? >>> http://www.skinnerinc.com/asp/fullCatalogue.asp?salelot=2383++93 >>> +&refno=++691521&saletype= >>> Fred Jaggi >>> --- >>> >> Or, even a sundial itself! >> First, a short link, that won't get trashed by email programs: >> http://tinyurl.com/3yqcjk >> >> It's a crystal globe that acts as a lens to focus a sun spot onto the >> curved brass curved. >> The plate is engraved for hour lines and declination curves... >> >> Dave >> --- >> 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: Mystery object
According to www.campbellsci.ca/Museum_Radiation_1_F.html , it is a Campbell-Stokes sunshine recorder. Apparantly, it is still in use, and still available. -Bill - Original Message - From: "Dave Bell" <[EMAIL PROTECTED]> To: "Frederick Jaggi" <[EMAIL PROTECTED]> Cc: "Sundial Sundial List" Sent: Tuesday, October 16, 2007 10:32 PM Subject: Re: Mystery object > Frederick Jaggi wrote: >> Hi Everyone: >> >> Here's a mystery object from the current Skinner auction. Could it be >> sundial related? >> http://www.skinnerinc.com/asp/fullCatalogue.asp?salelot=2383++93 >> +&refno=++691521&saletype= >> Fred Jaggi >> --- >> > Or, even a sundial itself! > First, a short link, that won't get trashed by email programs: > http://tinyurl.com/3yqcjk > > It's a crystal globe that acts as a lens to focus a sun spot onto the > curved brass curved. > The plate is engraved for hour lines and declination curves... > > Dave > --- > https://lists.uni-koeln.de/mailman/listinfo/sundial > > --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Mystery object
Frederick Jaggi wrote: > Hi Everyone: > > Here's a mystery object from the current Skinner auction. Could it be > sundial related? > http://www.skinnerinc.com/asp/fullCatalogue.asp?salelot=2383++93 > +&refno=++691521&saletype= > Fred Jaggi > --- > Or, even a sundial itself! First, a short link, that won't get trashed by email programs: http://tinyurl.com/3yqcjk It's a crystal globe that acts as a lens to focus a sun spot onto the curved brass curved. The plate is engraved for hour lines and declination curves... Dave --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Mystery object
Hi Everyone: Here's a mystery object from the current Skinner auction. Could it be sundial related? http://www.skinnerinc.com/asp/fullCatalogue.asp?salelot=2383++93 +&refno=++691521&saletype= Fred Jaggi --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Mystery object
Ian Trackman wrote > >Can anyone please help me to identify the following object : > >Made of brass with steel parts >It stands on a circular base 9.5 cms diameter. snip It sounds like something that could be used as a 3D marking out jig - to mark out spheres for atomic models maybe - could this be the purpose of the plunger?? Any chance of a JPEG as this would make identification easier. (direct to me off List) Good Luck with the search for an identity Tony Moss == \ ** ** \\ ** ** \\** *** *\\ ** ** *\\ ****** **\\ ***\\ Tony Moss, Lindisfarne Sundials *\\ 43, Windsor Gardens, Bedlington, ***\\Northumberland, England, NE22 5SY, **\\55° 07' 45" N1° 35' 38" W Tel/FAX +1670 823232 Mobile: 07970 208 540 Website: http://www.lindisun.demon.co.uk == The first choice for a Millennium Sundial. (every one Y2K compliant) Horizontal, Vertical, Declining, Analemmatic, Equatorial, Polar and Capuchin Sundials individually made in solid engraving brass. Professional-quality Dialling Scales, 'engine-divided' meridian layout instruments with software. Analemmatic dial plots - any size for any latitude. Graduation, re-cutting and restoration of scales. 'Lintique' patination of brass. ===
Mystery object
Message text written by "Ian Trackman" >Underneath the ring is scratched SP 640036< Not sure I can help but SP 640036 is the UK Ordnance Survey Reference for a point in the UK at N51deg 44min W01deg 04min. This refers to a place about 6 miles to the East South East of Oxford between Great Haseley and Tiddington - just where the M40 Motorway passes between the two.
Mystery object
Can anyone please help me to identify the following object : Made of brass with steel parts It stands on a circular base 9.5 cms diameter. There are three legs, 8 cms high On them, a horizontal ring 9 cms diameter and 2 cms deep. Underneath the ring is scratched SP 640036 The ring is marked in two sets of degrees 0 to 180 each. At 0 degrees is a vertical ring 14 cms diameter. On one side is engraved "Scientific Precision" and "Made in England" On the other side is marked -90 to +90 degrees. A moveable knob slides around the "degree" side. The knob has a plunger which causes a pin to appear on the interior edge. Inside the ring, attached on spindles at vertical top and bottom is a thin ring. Inside the ring is a plate which can be turned almost 90 degrees. It is marked -90 to +90 degrees. Across the centre of the plate and at right angles to it is another plate, attached by a central spindle. It is marked 0 to 360 degrees and "E" and "W". There are no apparent time markings on the object. There is no apparent date marked on the object. Help please. -- Ian Trackman email : [EMAIL PROTECTED]
Re: Mystery Object
I notice that the date June 21st corresponds with the time VI hours. Now, on June 21st the sun's longitude, expressed as a time, is 6 hours. Therefore, the scales show the sun's longitude on any date, which could be used to convert solar time to sidereal time. (BTW, when I first looked at it, I thought it gave July just 30 days, but then realised the dates in August are 4, 9, 14 etc., not 5,10.. as I thought.) Chris Lusby Taylor
Mystery Object [FWD from RETE-L]
[Looks like a planetarium projector mount to me, but you guys on Sundial-L are surely the group to know. Please reply also to Mr Blankenhorn <[EMAIL PROTECTED]> directly.] Bill Thayer * Date: Sun, 06 Jul 1997 22:27:18 + From: "R.C. Blankenhorn" <[EMAIL PROTECTED]> I have obtained an instrument that I cannot identify. It is English, probably late 4th quarter 19th century, unsigned. The 9 3/4" diameter circular base plate is made of mahogany and mounted on 4 heavy lacquered brass bun feet, with a heavy 3/8" wide brass ring screwed around the edge. The base plate has a varnished paper top, with scales around the edge - hours (I - XXIV) and minutes (0 - 60) for each hour, months (JAN - DEC) and days of the month (1 - 28/30/31). Mounted on top of the base plate, 3/4" above it, is a 7" diameter back surfaced mirror. In the center of the mirror is a mounting boss for a heavy knurled screw to mount the 9 1/2" long x 5/8" wide double-sided pointer. One side of the pointer has a 3" long narrow slot in it, the other side has the same 3" long narrow slot with 2 small fittings that have holes in them in the line of the slot that could possible have held something like a vane mounted on a wire. The apparatus is in very good overall condition, missing whatever originally went in the fittings. The apparatus was housed in a 11 1/2" square x 5" deep hand dovetailed mahogany box, with no other fittings except a second knurled screw identical to the one used to mount the pointer. Following are links to a picture of the entire object and a closeup of the edge showing the scales. http://www.gemmary.com/rcb/temp/whatsit.jpg http://www.gemmary.com/rcb/temp/whatsit2.jpg Can anyone identify this object for me and/or provide a reference for it. Thank you. R.C. Blankenhorn The Gemmary [EMAIL PROTECTED] *
