Work of our members

This equatorial sundial owes its existence to my happening upon a triangular piece of arduin.
The resemblance to a style triangle was so obvious that I decided that I would make this stone part of a sundial.
However, none of the corners even came close to the angle between the earth axis and the horizontal plane in Asten.
And so the stone remained in the studio.

Slowly the idea formed: I could mount the stone, under the correct angle, in a block of oak; and fit the iron tyre of an old cartwheel to the stone with stainless steel strip.

Then there remains the stone itself.
The shadow that the stone casts on the ring should be nice and straight, so I left an edge, both left and right, of a few centimetres wide.
On the sides, I drew the old symbols for the signs of the Zodiac. Then I cut away the space in between with a toothed chisel.
Top down on the one side, visible in the photograph, are the symbols for Cancer, Leo, Virgo, Libra, Scorpio and Sagittarius, the signs of summer and autumn.
On the other side are the symbols for Capricornus, Aquarius, Pisces, Aries, Taurus and Gemini, the signs of winter and spring.

The equatorial band has hour numerals painted on the inside, such that the dial reads Dutch daylight saving time.
This means that the numerals are shifted through ten degrees to account for the difference between local and standard time, and through another fifteen degrees to accommodate the difference between standard and summer time.

An iron tyre used to be fitted to a wooden cartwheel by crimping it on and fixing it with nails.
I left one nail hole open, so that around noon, a spot of light falls on the back of the style
I have indicated along a vertical line the difference between clock time and sundial reading, for every month, using the length of a line in that position.
In other words, I have drawn a stylised "equation of time"-curve.