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Horizontal analemmatic sundial for 44°29' N drawn with Shadows Expert software. It shows local time The terminology of sundial classification can be misleading. Although it features an analemma, this analemmic heliochronometer, end of 19th century, is not an analemmatic sundial - refer to the definition given in the text.
A watchclock is a mechanical clock used by security guards as part of their guard tour patrol system which require regular patrols. The most commonly used form was the mechanical clock systems that required a key for manual punching of a number to a strip of paper inside with the time pre-printed on it.
In his paper, "Quantum mechanics, matter waves and moving clocks", Müller has suggested that "The description of matter waves as matter-wave clocks ... has recently been applied to tests of general relativity, matter-wave experiments, the foundations of quantum mechanics, quantum space-time decoherence, the matter wave clock/mass standard, and led to a discussion on the role of the proper ...
This is to adjust the barograph so that it correctly reflects the station pressure. Barely visible below the knob is a small silver plunger. This is pressed every three hours to leave a time mark on the paper. The line between two of these marks is called the 'characteristic of barometric tendency' and is used by weather forecasters. The ...
A time clock, sometimes known as a clock card machine, punch clock, or time recorder, is a device that records start and end times for hourly employees (or those on flexi-time) at a place of business. In mechanical time clocks, this was accomplished by inserting a heavy paper card, called a time card
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The "program clock" is a timer that can be programmed with punched paper tape to ring bells or turn machines on and off at preprogrammed times. In telecommunication and horology, a slave clock is a clock that depends on another clock, the master clock.
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