I can't find an image on the internet, of a Circumference-Aperture Cylinder-Equatorial dial, but I'm going to post a drawing of one.
By the way, I use a broad definition of Equatorial Dial. Instead of only dials with a dial-face parallel to the equator, I include all dials that directly measure the Sun's apparent movement parallel to the equator. Well, any dial with a polar style (including the Polar Dial and all the Polar-Gnomon Flat Dials) measures the Sun's movement about the polar axis *reasonably* directly. Maybe all such dials almost qualify as Equatorial then. But I only call a dial Equatorial if it directly measures the Sun's apparent movement parallel to the equator, on a uniform circular scale that measures along a line parallel to the equator. ...even if the dial-face isn't parallel to the equator. Michael Ossipoff
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