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Sun-dial,_Temple_Gardens.png (414 × 600 pixels, file size: 67 KB, MIME type: image/png) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
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A shepherd's dial – also known as a shepherd's column dial, [57] [58] pillar dial, cylinder dial or chilindre – is a portable cylindrical sundial with a knife-like gnomon that juts out perpendicularly. [59] It is normally dangled from a rope or string so the cylinder is vertical.
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A second type of clock face is the 24-hour analog dial, widely used in military and other organizations that use 24-hour time. This is similar to the 12-hour dial above, except it has hours numbered 1–24 (or 0–23) around the outside, and the hour hand makes only one revolution per day.
A moon dial circles the inner ring of the zodiac, displaying the moon phase. The principal hand of the clock indicates the time of day on the outer ring of 24 golden Roman numerals, which run twice from I to XII. It features two suns, the smaller one indicating the date on the rete's calendar dial. The larger one circles the zodiac at one ...
John Harrison, Thomas Tompion, and Mudge [7] built a number of clocks with 24-hour analog dials, particularly when building astronomical and nautical instruments. 24-hour dials were also used on sidereal clocks. The famous Big Ben clock in London has a 24-hour dial as part of the mechanism, although it is not visible from the outside. [8]
The first clock known to strike regularly on the hour, a clock with a verge and foliot mechanism, is recorded in Milan in 1336. [96] By 1341, clocks driven by weights were familiar enough to be able to be adapted for grain mills, [97] and by 1344 the clock in London's Old St Paul's Cathedral had been replaced by one with an escapement. [98]