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A clock face is the part of an analog clock (or watch) that displays time through the use of a flat dial with reference marks, and revolving pointers turning on concentric shafts at the center, called hands. In its most basic, globally recognized form, the periphery of the dial is numbered 1 through 12 indicating the hours in a 12-hour cycle ...
Watch. A watch is a portable timepiece intended to be carried or worn by a person. It is designed to keep a consistent movement despite the motions caused by the person's activities. A wristwatch is designed to be worn around the wrist, attached by a watch strap or other type of bracelet, including metal bands, leather straps, or any other kind ...
A mechanical watch is a watch that uses a clockwork mechanism to measure the passage of time, as opposed to quartz watches which function using the vibration modes of a piezoelectric quartz tuning fork, or radio watches, which are quartz watches synchronized to an atomic clock via radio waves. A mechanical watch is driven by a mainspring which ...
A California dial refers to a clock face that consists of half Roman (usually 10 o'clock to 2 o'clock) and half Arabic numerals (usually 4 o'clock to 8 o'clock). A dash is often used for hours 3, 6, and 9, and an inverted triangle for hour 12. The use of this style dates back to the 1930s, and was featured in early Rolex and Panerai watches. [1]
Radium dial. A 1950s radium clock, exposed to ultraviolet light to increase luminescence. Radium dials are watch, clock and other instrument dials painted with luminous paint containing radium-226 to produce radioluminescence. Radium dials were produced throughout most of the 20th century before being replaced by safer tritium -based luminous ...
Open-face watches. An open-face pocket watch made by the Swiss watchmaker Omega, c. 1970. An open-faced, or Lépine, [ 9] watch, is one in which the case lacks a metal cover to protect the crystal. It is typical for an open-faced watch to have the pendant located at 12:00 and the sub-second dial located at 6:00.
Chronograph. An Omega Speedmaster Professional, which is commonly regarded as one of the most iconic chronographs ever produced. Gallet MultiChron Astronomic ( c. 1959 )—complex mechanical chronograph with 12-hour recording capabilities, automatic day, date, month, and moon phase display. A chronograph is a specific type of watch that is used ...
Movement (clockwork) In horology, a movement, also known as a caliber or calibre ( British English ), is the mechanism of a watch or timepiece, as opposed to the case, which encloses and protects the movement, and the face, which displays the time. The term originated with mechanical timepieces, whose clockwork movements are made of many moving ...