Hi FolkI thank Fred Sawyer for his note on the direct reading mean time double analemma dials and will be pleased to provide a note on their construction to anyone interested.
Their average error is about 30 seconds; maximum error about 3 minutes.These dials are quite different from the incorrect and misleading Brou analemma dial.
Brian Albinson --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
