Home > Industry/Domain > Chronometry
Chronometry
The science of the measurement of time.
2Categories 13194Terms
Add a new termContributors in Chronometry
Chronometry > Clock 
punch
Chronometry; Clock
A steel or brass rod, used to transmit pressure or a sharp blow to a required point. Punches are made for many purposes, e.g. Making centers before drilling, and for riveting, ...
pulley
Chronometry; Clock
A wheel grooved on its circumference to retain a rope or line. The weight of an eight-day clock is usually hung from a pulley. The line passes from the barrel round the pulley and ...
pull winding
Chronometry; Clock
Thirty-hour longcase clocks are usually arranged for pull winding on Christiaan Huygens's system. The length of rope or chain between the smaller weight and the ratchet wheel is ...
projection clock
Chronometry; Clock
A form of night clock incorporating an internal light and projection lenses to throw an image of the dial and hands on a wall or other convenient surface. The idea dates back to ...
precession of the equinoxes
Chronometry; Clock
The positions of the equinoxes are determined by the position of the Earth's axis, and if this was constant in direction the equinoxes would remain fixed in position in relation ...
precession of equinoxes
Chronometry; Clock
The positions of the equinoxes are determined by the position of the Earth's axis, and if this was constant in direction the equinoxes would remain fixed in position in relation ...
potence
Chronometry; Clock
A bracket or cock mounted between the clock plates. In a verge clock the potence is the bracket carrying the lower escape-wheel pivot.
Sub-categories
