Reflected ceiling dials

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Reflected ceiling dials are not common. A mirror is laid horizontally on a north-facing window sill - if you live in the southern hemisphere - or on a pole outside of the window. The hour lines are drawn on the ceiling. They will have the shape of a slightly distorted 8. The sun spot will tell you not only the time, but also the date.

Polar dials
Ring dials
© Helga Nordhoff
2001-2003