Vertical Direct Dials

Vertical dials are usually placed on walls of buildings and if the building is oriented in such a way that they face exactly toward the cardinal points of the compass (north, south, east and west), the dials are called vertical direct dials - vertical because the dial plate lies in a vertical plane and direct because it faces directly toward one of the cardinal compass points. Vertical direct dials take their names from the direction that their dial plates face. For instance, a dial placed on a wall facing due south is called a vertical direct south dial. Another type of vertical dial is the vertical declining dial.