Chronometry

Chronometry

The science of the measurement of time.

2Categories 13194Terms

Add a new term

Contributors in Chronometry

Become a Contributors

Chronometry > Clock

R-A regulator

Chronometry; Clock

Slang term for wall regulator with "R-A" on the pendulum. "R" stands for retard by turning the adjusting nut toward R to lower the pendulum bob. "A" stands for advance by turning ...

quill

Chronometry; Clock

A device by which a spindle may be rotated and at the same time moved axially, as in the driving spindle of a bench drill in which the drill can travel to and from the work while ...

quartz-crystal clock

Chronometry; Clock

Shortly after the excellent stability of frequency control by quartz crystal when applied to valve oscillator circuits was discovered, efforts were directed to producing a clock ...

quartz crystal

Chronometry; Clock

A crystal of quartz suitably cut and mounted will produce an electrical effect when mechanically deformed; conversely, it mechanically deforms when subjected to an electrical ...

quartz

Chronometry; Clock

Electronic transistorized movements that work on battery energy and require no winding or plug-in electricity. A tiny quartz crystal, vibrating at a high frequency, allows the ...

quandrant

Chronometry; Clock

In its simplest form, a quarter-circle of metal, ivory or wood, with a pair of sights along its upper edge, a scale of degrees inside its curved edge, and a light plumb-bob on a ...

punch, bell

Chronometry; Clock

A self-centering punch, with a center punch point at one end, designed to slide down a tube or sleeve which has a cone- or bell-shaped mouth. With the bell mouth placed directly ...