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Chronometry
The science of the measurement of time.
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Chronometry > Clock 
iron weights
Chronometry; Clock
Cast iron was first available commercially towards the end of the 18th century, and it soon became cheaper than lead. Its use for clock weights became almost universal in the 19th ...
iron clock
Chronometry; Clock
The mechanism of the earliest clocks was of iron, forged in the case of turret clocks, cut cold with a file in the case of smaller clocks.
invar
Chronometry; Clock
At the beginning of this century, Charles Edouard Guillaume, in the course of research into alloys suitable for standards of length, discovered that a steel alloy containing 36 ...
interval timer
Chronometry; Clock
There are two main forms of interval timers. The earlier was devised by Matthaus Hipp, Charles Wheatstone and others for measuring small intervals of time. A clockwork mechanism, ...
inro clock
Chronometry; Clock
Inro were small, rectangular lacquered wood or metal cases in which Japanese gentlemen carried their necessities, attached to the obi (sash) by a silken rope. Usually they had ...
index pins
Chronometry; Clock
The curb pins, carried by the shorter end of the index, which embrace the outer turn of the balance spring, for making adjustments to its effective length.
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