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Metric and
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Metric and
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Below is an index to checklists of postal items in metric and related-standards categories. Each page features postal items such as stamps, souvenir sheets, postal stationery, postmarks, cancels, meters, and also cinderellas and cachets from covers when appropriate, as well as numismatic items (banknotes and coins). The goal is to build an online catalog for Metric and Related-Standards Philately, available to and shared with anyone who is interested. If readers know of additional information or images, please contact the authors using the e-mail addresses at the bottom of this page.
| Metric and related-standards categories | |
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 | Metric system (The International System of Units (SI)) |
 | World Standards Day (annually: 14 October) |
  | ISO and IEC (and related-standards) |
 | SI (metric system) system unit names (the scientists behind the named metric units) |
  | Metric measurements (as seen on postal items) |
 | Postcodes of the world (Zip Code in the USA) |
 | Decimal money conversion (from non-decimal currency systems) |
 | Right-hand/left-hand driving customs (mostly the change from Left to Right) |
  | Standard time and time zones (and Gregorian Calendar) |
  | Traffic signs (and traffic lights) |
| Summary: 10 major divisions | |
(The links below lead to information sources that are maintained by others. They are not part of this Website.)
Back to Collective Philatelic Works (of Two Meteorologists).