Striking clock

（重定向自Rack and snail）

The Kremlin Clock on the Moscow Kremlin rings in 2012.

Countwheel striking: the unequally spaced notches in the countwheel (A) regulate the number of times the bell is struck.

Rack striking: the snail-shaped cam (N) makes the clock sound the correct number of times by checking the fall of the rack (M).

A striking clock (also known as chiming clock) is a clock that sounds the hours audibly on a bell or gong. In 12-hour striking, used most commonly in striking clocks today, the clock strikes once at one a.m., twice at two a.m., continuing in this way up to twelve times at 12 noon, then starts again, striking once at one p.m., twice at two p.m., up to twelve times at 12 midnight.

单词	Rack and snail
释义	Rack and snail 英语百科 Striking clock （重定向自Rack and snail） A striking clock (also known as chiming clock) is a clock that sounds the hours audibly on a bell or gong. In 12-hour striking, used most commonly in striking clocks today, the clock strikes once at one a.m., twice at two a.m., continuing in this way up to twelve times at 12 noon, then starts again, striking once at one p.m., twice at two p.m., up to twelve times at 12 midnight.
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