Article of the month May

Style-less pole style sundial 2

In 2009, Joël Robic, on his website, introduced a new pole style sundial without a pole style.
This sundial is on an east-declining vertical wall.

Here, too, the head of the observer is employed as the nodus. However, the observer cannot very well stand on a vertical plane!
Fortunately, the ‘height’ scale may just as well be on the pavement in front of the sundial.
The photo shows a temporary scale, but the principle is clear.

In this way, a sundial does not need to be high up a wall.
The pole style itself is absent, and so is no obstacle to the public.

Read more about this sundial on the website of Joël Robic.

Also in 2009, the "Sundial" mailing list announced a large horizontal style-less sundial in Melbourne, Australia.
An aerial photograph of the square shows spirals and parts of twenty-four hour lines in between. More than is strictly necessary, but that does not matter.

A second photograph shows that the square is indeed devoid of pole styles or any other obstacles.
The whole of the square remains free for any purpose, temporary or otherwise.

There should therefore be a ‘height’ scale for the observer to stand on to read the time.
It is visible in a third and fourth photograph.