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Chronometry
The science of the measurement of time.
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Chronometry > Clock 
revolutionary clock
Chronometry; Clock
In 1793 the introduction in France of what revolutionaries regarded as rational time measurement, on a decimal base, prompted the production of decimal clocks. Revolutionary ...
spotting
Chronometry; Clock
A finish or form of decoration given to chronometer plates or clock parts, consisting of equidistant circular spots or rings which sometimes overlap each other. The rings are ...
spoon fitting
Chronometry; Clock
An early hood-locking device found on some late 17th-century longcase clocks in which the hood was raised vertically on runners for access to the movement. The spoon fitting ...
split plates
Chronometry; Clock
Assembling a large three- or four-train clock often presents great difficulty. High-quality clocks sometimes have the front or backplate divided, so that each train may be ...
jewelling
Chronometry; Clock
One of the early improvements in clock making was the replacement of brass pivot holes with pierced jewels. Precision timekeepers were jewelled with natural ruby or sapphire; in ...
japanning
Chronometry; Clock
A pseudo-oriental form of decoration simulating Chinese or Japanese lacquer work. Japanning was extensively employed for decorating longcase clocks throughout much of the 18th ...
Japanese sundial
Chronometry; Clock
Like most astronomical and horological conventions in Japan before the advent of the Europeans, sundials were probably imported during the Asuka period (6th century AD) from T'ang ...
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