Conical or Scaphe dials

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The conical, scaphe or bowl sundial uses the concave segment of a circular cone as the dial face. They are similar in appearance to the hemicyclium, which was invented by the Greeks and then copied by the Romans.

The photo shows a full-size working reconstruction of a hemicyclium.

Types of Sundials

Armillary dials
Cylindrical or pole sundials
© Helga Nordhoff