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Old 05-08-2017, 03:32 PM
tawnyman tawnyman is offline
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Samrat Yantra sundial

Here's an unusual one, it's a card model of a giant sundial, built on an architectural scale, in New Delhi, India. The original was built in the early 1700's as part of the Jantar Mantar Royal Observatory. The gnomon that casts the shadow is some 70 feet high, so a high precision of timekeeping is possible, theoretically to some 2 seconds.

Paper Models | Jantar Mantar

The instructions provide a useful section on using the model as a sundial, with the necessary adjustments for latitude.
A fascinating historic observatory, some of the other instruments are amazing to look at.
Julian
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  #2  
Old 05-08-2017, 04:19 PM
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Rubenandres77 Rubenandres77 is offline
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Thanks a lot for sharing this unusual but interesting project with us

The kit looks great with nice textures, and the instructions are very detailed.

A fine work!
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Rubén Andrés Martínez A.

Un dessein si funeste, s'il n'est digne d'Atrée, est digne de Thyeste.
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Old 05-08-2017, 04:52 PM
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SCEtoAUX SCEtoAUX is offline
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Thanks for the heads up. Sundial models are always appreciated.
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AC000000 EAMUS CATULI! Audere est Facere
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Old 05-08-2017, 11:36 PM
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herky herky is online now
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great looking model.
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current builds.whm uss nimitz,hmv ts hamburg
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Old 05-17-2017, 07:28 PM
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whulsey whulsey is offline
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Cool looking, but already have too many cool looking things. Now I need to build a few of them.
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Old 05-18-2017, 04:23 PM
tawnyman tawnyman is offline
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Yes, I know what you mean. It's a constant challenge getting time to build all these great things, each one generally takes me months or even years to get to completion. I think I started my first model, a Voyager probe, in 2012 and still awaits completion. Although I have finished quite a few others in the meantime!
Julian
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Old 05-19-2017, 04:42 AM
DougH DougH is offline
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Very interesting and impressive site. Graphics and presentation, excellent. I hope we see more of this. The design and accuracy required is amazing. A sundial accurate to 2 seconds.
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Old 05-20-2017, 10:46 AM
tawnyman tawnyman is offline
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Yes, I was very impressed by the website, Doug. Lots of research and useful information on there. The Solar Nexus PDF in the library section has some amazing photographs of the prototypes, they truly are amazing things. Julian
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