Chronometry

Chronometry

The science of the measurement of time.

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Chronometry > Clock

epact

Chronometry; Clock

The age of the moon on 1st January in any year; when this is known its age at any subsequent date in the year can be deduced. Since twelve lunations equal 354-36 days and a year ...

engraving

Chronometry; Clock

Engraving was used extensively in the decoration of clocks, for dial centers, back plates, cases, hour, minute and second numerals, and the maker's name. Numerals when engraved ...

wheel-cutting engine

Chronometry; Clock

A wide variety of wheel-cutting engines have been made over the past three centuries, but all follow more or less the same general principle. It is generally agreed that the ...

fusee engine

Chronometry; Clock

The clock-barrel engine could also be used for cutting the groove in fusees for bracket clocks, except that the cutter would follow the conical profile of a fusee instead of the ...

clock-barrel engine

Chronometry; Clock

In the past complex tools were often known as engines. Clock-barrel engines were used for cutting the spiral groove to take the gut lines of an eight-day long case clock barrel. ...

engine turning

Chronometry; Clock

Engraving produced by a machine. Beautiful decorative engraving in many designs can be done with the work in a specialized lathe or rose engine, in which the eccentric movement of ...

enamelling

Chronometry; Clock

The process used to give a hard vitreous finish to clock dials and sometimes ornamental parts of clock cases. It should not be confused with painting. Enamel is a fusible vitreous ...