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Chronometry
The science of the measurement of time.
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Chronometry > Clock 
oil lamp clock
Chronometry; Clock
Known also simply as a lamp clock, this fulfilled the dual purpose of providing light, like an ordinary oil lamp, and telling the time. The principle is simple: a conventional ...
oil
Chronometry; Clock
To lubricate clocks effectively is one of the horologist's greatest problems. In the past, mixtures of animal and vegetable oils were used. Great care is necessary in refining ...
ogee moulding
Chronometry; Clock
The name given to the cyma recta moulding, used architecturally and in furniture; the reversed ogee (or O. G. , O-gee, etc. ) is known as the cyma reversa. The section of the ...
ogee (OG) clock
Chronometry; Clock
A double, continuous S-like curve used as a molding on certain straight rectangular clocks of the early 1800s.
octant
Chronometry; Clock
To find his position at sea a navigator needs to know his longitude and latitude. For both determinations he must measure the altitude of the sun or a star above the horizon, and ...
observatory clock
Chronometry; Clock
A clock of great precision used for the study of astronomical phenomena, also for rating other precision timekeepers such as marine chronometers and deck watches.
gallery clock
Chronometry; Clock
An eight-day or electric clock, usually round, with a simple case and a dial usually eight inches orlarger designed to hang on a wall in a public place.
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