Hi, I am investigating a sun dial which it is claimed will be accurate to a fraction of a minute. It is based on the sundials made by Cooke, who was the New South Wales Government Astronomer up to 1928. The difficulties in making it are to make an analemma with the days of the year marked on it. The device has a clock dial with hour hand and minute hand. I have the facilities to make all the parts, the challenge is to make it the best of its kind. The original model came in two versions, a cheap version and a deluxe. There is still some reverse engineering to do to re-create the original designs which are only available as pictures. I am attaching a picture of the cheaper model. Cheers, Neville Michie
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