Clock

Clock

Any instrument other than a watch for measuring or indicating time, especially a mechanical or electronic device having a numbered dial and moving hands or a digital display.

Industry: Chronometry

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Clock

scroll

Chronometry; Clock

Decorative ornament resembling a partially rolled scroll of paper.

screwplate

Chronometry; Clock

A flat piece of hardened tool steel with various-sized drilled and tapped holes for producing screw threads on metal rods, up to about 1/4 in. In diameter. The holes are often in pairs or sets of ...

This tool is held in a bench vice and has support bearings for a spindle which is rotated by rolling the hand over its knurled or octagonal body. It is furnished with a range of large and small brass ...

screwed plates

Chronometry; Clock

Occasionally clocks are found in which the pillars are screwed into the clock backplate, rather than riveted. This makes cleaning the clock much easier. Modern clocks usually have the pillars ...

screwdriver

Chronometry; Clock

Usually, a steel blade and handle with a thin flat driving element which engages in the slot or other recess of the screw. Recently, specially shaped recesses in screws to fit special screwdrivers ...

screw stocks

Chronometry; Clock

A tool in the form of nutcracker pliers, with jaws adjusted by means of a set screw and nut, and a number of screw-forming holes between the jaws. Also means a tool in which split-screw dies are ...

screw

Chronometry; Clock

By the mid 16th century screws had begun to be used in clockmaking, and they have increasingly replaced pins and wedges, although pins are still used to secure certain parts. Standardisation of screw ...