Equatorial Dials

Equatorial dials are pole - style dials with a gnomon inclined so that it is parallel to the Earth's axis and points to the north celestial pole. This dial is called an equatorial dial because the dial plate, that is the surface used to receive the shadow, is a flat disc in the plane of the celestial equator. Equatorial dials are universal, that is, it can be used at any latitude because the gnomon can be set parallel to the Earth's axis with some adjustments. Equatorial dials can be classified into the equatorial disk dials or the armillary dials.