How to Set up and Use a Sundial - London Hall Antique Replica Portable Sundial
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- Опубликовано: 20 мар 2021
- This Brass Sundial came from an Estate. I did some research to learn how to use it and thought I would put together a short video on it. It has a pretty high "cool" factor in my opinion. Best I can tell it's a London Hall Antique replica of some sort but I won't swear to it. This is a bit off the beaten path for my channel but you need to have and share a little bit of historical technology once in a while! The compass in it is pretty decent and it did not take lone to line up the pointer with magnetic north. One puzzle I quickly solved was the protractor on the side to set the declination of the sun dial based on your latitude. I had to do some quick research to figure out my latitude but that was easy enough.
An interesting note I didn't mention was that this would work south of the equator (It is designed for north). The only difference being that you would line up the pointer (also called an gnomon or a style) to magnetic south.
For anyone interested, Here is an affiliate link to a similar Sundial:
amzn.to/3c8uGeY
#Sundial
#Solar
#Clock
My son sent this to me as a gift probably a dozen years ago while he was overseas in Australia. I had no idea how to use it until I too, came across your video. Your instructions were superb. I appreciate it.
Glad I could help!
Once a portable sundial gnomon is adjusted for the local latitude it must be aligned with true north. The difference between true north and magnetic north is magnetic declination. This value varies depending on your location and also changes slowly over decades. To read civil time (clock time) from a sundial a correction is made for degrees longitude between your location and the local meridian, an Equation of time correction is made for variations in the length of the solar day due to the Earth's elliptical orbit around the sun (eccentricity and obliquity), and finally, an hour must be added if your location is currently observing daylight savings time.
Thank you for sharing your knowledge!
@@ExtremeDIYGuy , though it's a reproduction, it's an antique reproduction and if you reached out to the North American Sundial Society, or the British Sundial Society, you should find out even more about this device. Very cool, hope you find out more about it. sundials.org/
@@ExtremeDIYGuy ⚠️ God has said in the Quran:
🔵 { O mankind, worship your Lord, who created you and those before you, that you may become righteous - ( 2:21 )
🔴 [He] who made for you the earth a bed [spread out] and the sky a ceiling and sent down from the sky, rain and brought forth thereby fruits as provision for you. So do not attribute to Allah equals while you know [that there is nothing similar to Him]. ( 2:22 )
🔵 And if you are in doubt about what We have sent down upon Our Servant [Muhammad], then produce a surah the like thereof and call upon your witnesses other than Allah, if you should be truthful. ( 2:23 )
🔴 But if you do not - and you will never be able to - then fear the Fire, whose fuel is men and stones, prepared for the disbelievers.( 2:24 )
🔵 And give good tidings to those who believe and do righteous deeds that they will have gardens [in Paradise] beneath which rivers flow. Whenever they are provided with a provision of fruit therefrom, they will say, "This is what we were provided with before." And it is given to them in likeness. And they will have therein purified spouses, and they will abide therein eternally. ( 2:25 )
⚠️ Quran
Bro ngl talk less when you speak to woman, or you’ll have the fan in the ear effect
A friend gifted me one of these to help me navigate my retirement! I searched google for how to use it, and stumbled upon your excellent video. Thank you for such a clear, straightforward explanation of its use!
That is awesome! Im glad you enjoyed it!
I just got one of these for my little brothers 18th birthday. He loves nature and going off grid. I cant wait to show him how to use it! Thanks for your help
That is awesome!
I got one for Christmas. Of course it came with no instructions. I searched and found you! You gave easy to use instructions. Thank you. It is so cool, I love stuff like this.
Glad I could help!
Thank you for posting that! I got one of these, a reproduction of course, but with no instructions!😂 Glad to have this set up guide!
Glad I could help!
I just found one of these at my local thrift store AUD$15, as a sailor I couldn't resist, but had no that it was also a sundial or how to work it so a BIG THANKS!
Glad I could help!
I'm glad you taught me how to Brass Sundial Compass 3. Since I was teenage, my parents gave me it for Merry Christmas.
Your welcome glad you liked the video!
I’ve had a brass sundial compass reproduction before. I gave it to an interested friend and It’s box. I had an impossible time trying to figure out the raised curved protractor device you were showing, and couldn’t see the shadow on the very shiny brass, basically a nightmare for me. Even though I knew to set the correct latitude for my area,I couldn’t see the pointer shadow on the very shiny brass. It never occurred to me to place some white paper around it. I thank you for the demonstration on that!! I believe I’ll go and secure myself another one. Thanks again for the helpful Vid!
Thanks for checking out the video!
Thanks for the knowledge. I have the same piece and I did not understand why the time was always off in the afternoon. It was because I didn't understand the latitude protractor. Thanks!
Your welcome! Glad this video was helpful to you.
Thanks
We found this at the Lewis and Clark fort Clatsup in Oregon.
I found same kind of F.L. West made sundial. Didn't know how it is used, so that's for the instructions.
You bet!
I love how you can never guess what the next video will be about.
Honestly, Many times I can't even guess what the next video will be about! Lol
Great video! Got one of these for Christmas, I will give it a try next time we have sunlight. Thanks!
Thanks for watching!
Thank you for showing us how it works 😊. Fun. Amazon sells brass ones for $60-$20 usd. Going to get one to use when camping as a backup.
That is awesome!
Thank you so much. Now I can figure this crazy thing out!
Happy to help!
Very helpful and interesting. Hope you're enjoying!
Thanks!
IT IS TIME !!!! LOVE JOHN !!!!
Thanks for the detail breakdown. Now I can understand mine better.
Your welcome glad you liked it!
Awesome video! Ive always been interested in those!!
Thanks for watching!
Thanks for the sample instructions
No problem!
I have one of these and this is a really useful vid tbh
Good to hear! Thanks!
I wouldn't mind having a couple, especially in 2023
We may need them!
That might be a 1941 model. There are reproductions very similar to it for about 20.00. They are neat. Thanks for the video.
Thanks for the info!
Hola Jose, tengo el mismo y no había encontrado suficiente información para entender su funcionamiento.
Gracias por tu vídeo, saludos desde México.
Saludos Y Gracias!
Like you I also found one, this video helped me use it 👍
Glad I could help, very cool sun dial!
Cool, thinking of getting one
Definitely worth getting if your into that sort of stuff!
Interesting, thank you.
You're welcome
Awesome thanks
You bet!
Thanks for the explanation. I found one nearly identical to yours with no instructions
You're welcome!
Fahrvergnügen !! I want one of these !
They are relatively inexpensive online if I'm remembering correctly
Thank you
Welcome!
Thankyou. My wife bought me a new one of these but there were no instructions in the box!
Glad you got it figured out!
Nice 👌
Thanks!
Thanks
Welcome
Dude you use simple way and it worked bcz I watch 2 vids and there acting like it’s harder then you think or say it’s easy but don’t explain it. I’ll show my daughter this video and go from there bcz I can’t explain shit it anyone I just know how to do it
Ok cool, thanks for the feedback!
@@ExtremeDIYGuy no bud you rlly broke it down for her when I tried showing her she just was like wtf are you saying and I found this for her and now she gets it. I just think the time change messed her up. It’s hard to tell a kid it’s 245 when time says it’s 345
is that a dessicant packet? I mean if it wasn't attached it could've been added in later so I'm not sure that disqualifies it as an antique.
Its a Reproduction of an antique sun dial.
Gnomon must be pointed to true north as magnetic north will give a false reading. Adjust declination to your local area from a top map or on line.
Thanks for the feedback!
Wouldn't be all the point of using a such device to be able to see the shadow falling on to the marked ring of the sundial without using a piece of paper... ? In old times when it was used on see or land this sundial would be sufficient by itself to show exact time...
The paper is there for contrast and to point out where the shadow falls.
I sell in my shop
Cool!
Unfortunately this ‘sundial’ is more useful as a paperweight. While it looks good, it’s a mish-mash of the traditional horizontal dial with angled gnomon (good for one latitude) and the universal dial with a thin central perpendicular pillar gnomon (good for all latitudes). I have a variation of the second type, received as a gift and presumably from a similar manufacturer, but the pillar is off to one side and this dial also is therefore useless. Might make a good diy project to turn one of these into a proper dial, otherwise don’t waste your money.
This one is more of a decoration than a sundial, but it does work to a certain degree
Actually...
If "you know the time" (the "MEASUREMENT" was USUALLY DONE at 12:00 "with the Sun perpendicular above your head") YOU CAN FIND OUT YOUR LATITUDE (used for centuries for navigation).
It was the precursor of the modern SEXTANT...
I really Love "old ways" - no needs for electricity or satellites, and it make the job done -.
That's pretty cool, I did not know that!
Just ask the internet for your local latitude. It knows everything
A sexant measures ANGLES, not time.
Very cool
Thanks!