A plate of metal or another material which, in a standard clock or watch, serves to indicate hours, minutes and seconds. Dials come in an almost limitless variety of shapes, decorations, materials, etc.
- Indications are given by numerals, graduations or markers in different styles.
- An aperture dial has openings (apertures) through which the time indications can be read.
- A thirteen-piece dial comprises 12 enamelled cartouches for the hours set around a thirteenth central enamelled piece, often decorated and with the maker's signature.
- A calendar dial gives calendar indications such as the day, date, month, year and religious festivals.
- A multiple time zone dial (see complication) gives the time in two or more zones.
- A dial with tide gauge (see complication) gives high and low tide times for a given location.
- A regatta dial (see complication) has a countdown function enabling competitors to position themselves as near as possible to the starting line in the minutes leading up to the race.
- An orienteering dial (see complication) features a hand which, driven by a specific wheel and making one complete revolution of the dial in 24 hours, shows North when the hour hand is pointed towards the Sun.
- A diving dial (see complication) indicates surfacing time and possibly also decompression stops and times.