Stamp: Clocks (Germany, Federal Republic 1992)
Clocks (Germany, Federal Republic 1992)
15 October (Germany, Federal Republic ) within release Clocks goes into circulation Stamp Clocks face value 170+80 German pfennig
| Stamp Clocks in catalogues | |
|---|---|
| Michel: | Mi:DE 1635 |
| Yvert et Tellier: | Yt:DE 1467 |
Stamp is square format.
Also in the issue Clocks:
- Stamp - Clocks face value 60+30;
- Stamp - Clocks face value 70+30;
- Stamp - Clocks face value 80+40;
- Stamp - Clocks face value 100+50;
- Stamp - Clocks face value 170+80;
Stamp Clocks it reflects the thematic directions:
Elements of industrial instrumentation have long histories. Scales for comparing weights and simple pointers to indicate position are ancient technologies. Some of the earliest measurements were of time. One of the oldest water clocks was found in the tomb of the ancient Egyptian pharaoh Amenhotep I, buried around 1500 BCE. Improvements were incorporated in the clocks. By 270 BCE they had the rudiments of an automatic control system device.
A clock or chronometer is a device that measures and displays time. The clock is one of the oldest human inventions, meeting the need to measure intervals of time shorter than the natural units such as the day, the lunar month, and the year. Devices operating on several physical processes have been used over the millennia.
