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Metric Measurements
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Metric Measurements
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Below is a checklist of metric measurements (consisting of numbers and their associated metric units) on postal items (stamps, souvenir sheets, aerogrammes, postal cards, etc.). Catalog numbers, years of issue, and notes on the items featured are given when available. If readers know of additional information or images, please contact the author using the e-mail address at the bottom of this page.
This list does not include postal items specifically about the metric system (SI), many of which show metric units.
This list also does not include satellite launch covers, as there are too many of those with measurement units on them.
| Country | Catalog Number | Type of Item | Year of Issue | Notes on Content |
|---|---|---|---|---|
| Length: meter (m) and kilometer (km) | ||||
| Austria | 739 (Mi1174) | 1964 | "m" band, shortwave radio | |
| Austria | 739 fdc | Stamp on FDC | ||
| Austria | 1359 (Mi1857) | 1986 | "3106 m" elevation, Sonnblick | |
| Austria | 1359 maxi | Maxicard | ||
| Austria | 1359 fdc | Stamp and cachet on FDC | ||
| Australia | None | Printed stamp on aerogramme (A70)3 | 1985 | "150 km" distance, road sign, kangaroo |
| Australia | None | Printed stamp (same) on aerogramme (A71)3 | ||
| Australia | None | Printed stamp (same) on aerogramme (A72)3 | ||
| Australia | None | Printed stamp (same) on aerogramme (A73)3 | ||
| Bulgaria | 301 (Mi304) | 1936 | "2925 m" elevation, Mt. Moussalla | |
| Canada | 1063 (Mi972) | 1985 | "21.3 m" elevation, lighthouse, Sisters Islets | |
| Canada | 1064 (Mi973) | "22.6 m" elevation, lighthouse, Pelee Passage | ||
| Canada | 1065 (Mi974) | "25.3 m" elevation, lighthouse, Haut-fond Prince | ||
| Canada | 1066 (Mi975) | "15.2 m" elevation, lighthouse, Rose Blanche | ||
| Canada | 1066b (BL4) | MS4 (1063-1066) | various "m" elevations, lighthouses | |
| Canada | 1831b (Mi1821) | One of MS4 (1831 (a-d)) (BL49, Mi1820-1823) | 2000 | "100 m" map scale, dam |
| Canada | 1960a (Mi2074) | From MS8 (1960 (a-h)) | 2002 | "5959 m" elevation, Mt. Logan, Canada |
| Canada | 1960b (Mi2075) | "5633 m" elevation, Mt. Elbrus, Russia | ||
| Canada | 1960c (Mi2076) | "4884 m" elevation, Puncak Jaya, Indonesia | ||
| Canada | 1960d (Mi2077) | "8850 m" elevation, Mt. Everest, Nepal/China | ||
| Canada | 1960e (Mi2078) | "5984 m" elevation, Mt. Kilimanjaro, Tanzania | ||
| Canada | 1960f (Mi2079) | "4897 m" elevation, Vinson Massif, Antarctica | ||
| Canada | 1960g (Mi2080) | "6962 m" elevation, Mt. Aconcagua, Argentina | ||
| Canada | 1960h (Mi2081) | "6194 m" elevation, Mt. McKinley, Alaska | ||
| Congo (People's Republic, Brazzaville) | 899 (Mi1240) | 1991 | "7371 km" distance, Trans-Siberian Railroad | |
| Congo (People's Republic, Brazzaville) | 900 (Mi1241) | |||
| Czechoslovakia | 837 (Mi1056) | 1957 | "2638 m" elevation, High Tatra | |
| Czechoslovakia | 837 maxi | Maxicard | ||
| Czechoslovakia | 836-838 fdc | One of three stamps on FDC | ||
| Denmark | 1022 (Mi1096) | 1995 | "1 km" map scales, Danish islands | |
| Denmark | 1023 (Mi1097) | |||
| Denmark | 1024 (Mi1098) | |||
| Denmark | 1025 (Mi1099) | |||
| Ecuador | 748A (Mi1991) | 1966 | "35,900 km" geostationary altitude | |
| Faroe Islands | 161 (Mi154) | 1987 | "2 km" map scale, island | |
| Finland | 1197 (Mi?) | MS4 (a-d) | 2003 | various "m" height, lighthouses |
| France | None | Meter on cover | 1951 | "300 mètres" height, Eiffel Tower |
| France | 3786 (Mi?) | From booklet pane of 12 (3793a (3782-3793)) | 2010 | "5 m", level of "inondation" (flood) |
| France | 3786 maxi | Maxicard | ||
| French Polynesia | 783 (Mi824) | 2000 | "2000 m", "2066 m", and "2241 m" elevations, Mt. Aroai and Mt. Orohena | |
| French Polynesia | 784 (Mi825) | |||
| French Polynesia | 784 fdc | Stamp and cancel and cachet (like stamp) on FDC | ||
| French Southern and Antarctic Territories | Unknown2 (Mi?) | One of strip of 5 (1-5) | 2012 | "23,222 km altitude" (in French text) |
| Great Britain | 2754a (BL?) | In (lower-left) margin of booklet pane of 4 (2748-2749+2x 2754), from (2756a presentation pack | 2010 | "27 km" distance/length, "100 m" depth/underground, Large Hadron Collider at CERN |
| Italy | 1942 (Mi2289) | 1993 | "4559 m" elevation, observatory | |
| Korea (North) | 4855 (BL724) | SS1 | 2009 | "490 km x 1426 km" perigee and apogee distances, intended orbit for Kwangmyongsong-2 satellite |
| Kyrgyzstan | 153 (Mi?) | 2000 | "7010 m" elevation, Khan-Tengri Mountain | |
| Kyrgyzstan | 154 (Mi?) | "7439 m" elevation, Victory Peak | ||
| Kyrgyzstan | 155 (Mi?) | "7134 m" elevation, Lenin Peak | ||
| Kyrgyzstan | 155a (Mi?) | MS3 (153-154 + label) | various "m" elevations, mountains | |
| Malagasy Republic | 566 (Mi814) | 1976 | various "m" heights and "km" distances, Viking orbiter elevation data | |
| Malagasy Republic | 566 ds | Deluxe sheet (566) | ||
| Manama | Mi320 | Two of MS32 (2x (Mi306-321)) | 1970 | "45 km" altitude, for Lunar Orbiter |
| Manama | Mi320_ds | Deluxe sheet (Mi320) | ||
| Monaco | 672 (Mi873) | 1967 | various "m" depths (implied units), water soundings | |
| Nepal | 450 (Mi?) | 1986 | "7161 m" elevation, Mt. Pumori | |
| Nepal | 462 (Mi?) | 1987 | "6883 m" elevation, Mt. Kanjiroba | |
| Nepal | 477 (Mi?) | 1989 | "6812 m" elevation, Mt. Amadablam | |
| Nepal | 495 (Mi?) | 1991 | "7710 m" elevation, Mt. Kumbhakarna | |
| New Zealand | 1680a (BL124) | In (upper-right) margin of MS4 (1677-1680) | 2001 | various "km" distances, signpost |
| New Zealand | 2176 (Mi?) | 2008 | various "km" distances, road sign | |
| Norway | 1570 (BL37) | MS2 (1570 (a-b)) | 2009 | "6 million square kilometers" and "2 million square kilometers" (in text) |
| Pakistan | 647 (Mi653) | 1985 | "8??? m" elevation, Mt. Rakaposhi | |
| Pakistan | 648 (Mi654) | "8125 m" elevation, Mt. Nangaparbat | ||
| Panama | 459G (Mi803A) i459G (Mi803B) | Imperforate with changed colors | 1965 | "4827" m, elevation of photo from Ranger-7 |
| Panama | 459 (BL32) i459 (BL33) | SS1 Imperforate SS1, changed colors | ||
| Paraguay | C411 (BL247) | In (lower-left) margin of SS1 | 1975 | "40,000 km" distance, Pioneer-11 to reach Jupiter |
| Poland | 1010 (Mi1258) | 1961 | "700,000 km" distance, traveled by Vostok-2 | |
| Poland | 1093 (BL28) | In (upper) margin of SS1 | 1962 | "2,600,600 km" and "2,000,000 km" distances, traveled by Vostok-1 and Vostok-2 |
| Poland | 2355 (Mi2647) | 1979 | "646 m" height, broadcasting tower | |
| Romania | 5157 (Mi?) | From MS8 (5157a (8x 5157 + label)) | 2010 | "15 m" height, lighthouse |
| Romania | 5158 (Mi?) | "17.5 m" height, lighthouse | ||
| Romania | 5159 (Mi?) | "10 m" height, lighthouse | ||
| Romania | 5160 (Mi?) | "43.9 m" height, lighthouse | ||
| Romania | 5161 (Mi?) | "18 m" height, lighthouse | ||
| Romania | 5157+5161 fdc | Two stamps on FDC | (As above) | |
| Russia | 5106 (BL160) | SS1 | 1982 | "8848 m" elevation, Mt. Everest |
| Slovenia | 199 (Mi88) | 1994 | "2350 m" elevation, Mt. Ojstrica | |
| South Africa | 815 (Mi830) | 1991 | "4260 km" distance, Cape Town to Sanae (Base) | |
| South Georgia and the South Sandwich Islands | 348 (Mi433-434) | Strip of 2 (348 (a-b)) | 2007 | various "m" elevations, topographic maps |
| South Georgia and the South Sandwich Islands | 349 (Mi435-436) | Strip of 2 (349 (a-b)) | ||
| Surinam | 385 (Mi601) | 1971 | "80 km" distance, Washington-Baltimore | |
| Surinam | 386 (Mi602) | "2500 km" distance, England-Sweden | ||
| Surinam | 387 (Mi603) | "384,400 km" distance, interplanetary TV | ||
| Switzerland | 946 (Mi1525) | 1994 | "-10,916 m" depth, bathyscaphe Trieste dive in 1960 | |
| Switzerland | 947 (Mi1526) | "+16,940 m" altitude, stratospheric balloon FNRS flight in 1932 | ||
| Switzerland | 946-947 fdc | Two stamps and cachet on FDC | (As above) | |
| Switzerland | 946-947 folder | FDOI folder, also inside | ||
| Tristan Da Cunha | 285 (Mi295) | 1980 | "5 km" and "5 mile" map scales, Tristan Island | |
| Tristan Da Cunha | 286 (Mi296) | "10 km" and "10 mile" map scales, Gough Island | ||
| United States | 3409a (Mi?) | From MS6 (3409 (a-f)) (BL55) | 2000 | "2.4 m" diameter, optical telescope, Hubble Space Telescope (HST) |
| United States | 3409c (Mi?) | "10 m" diameter, twin (optical and infrared) telescopes, Keck Observatory | ||
| United States | 3409f (Mi?) | "305 m" diameter, radio telescope, Aricebo Observatory | ||
| United States | 3409a fdc1 | Stamp on FDC | "2.4 m" diameter, optical telescope, Hubble Space Telescope (HST) | |
| United States | 3409a fdc2 | Stamp on FDC (different) | ||
| United States | 3409a fdc3 | Stamp on FDC (different) | ||
| Yemen Arab Republic | Mi1426 | 1971 | "16.5 m" class, sailboat | |
| Yemen Arab Republic | Mi1427 | "5.5 m" class, sailboat | ||
| Yemen Arab Republic | Mi1428 | "16.5 m" class, sailboat | ||
| Mass: gram (g) and kilogram (kg) | ||||
| Albania | 1360 (Mi1486) | 1971 | "173 kg" mass, Chicom-1 satellite | |
| Albania | 1362 (Mi1488) | "221 kg" mass, Chicom-2 satellite | ||
| Australia | 2893c (Mi?) | In (left) margin of double-sided booklet pane of 8 (2x (2890-2893)) | 2008 | "20 tonnes", greenhouse gas |
| Denmark | 833 (Mi890) | 1987 | "20 g" @ "14/kg", price sticker (error?) | |
| Great Britain | 2754a (BL?) | In (lower-left) margin of booklet pane of 4 (2748-2749+2x 2754), from 2756a presentation pack | 2010 | "38,000 tonnes", Large Hadron Collider at CERN |
| Romania | C56 (Mi1733) | 1958 | "1327 kg" mass, Sputnik-3 | |
| Romania | C56 fdc | Stamp on FDC | ||
| Russia (USSR) | 2083 (Mi2101) | Stamp and label | 1958 | "1327 kg" mass, Sputnik-3 (on label) |
| Pressure: hectopascal (hPa) and millimeter of Mercury (mm Hg) | ||||
| Belgium | B964 (Mi1934) | 1978 | "110-250 mm Hg" blood pressures, sphygmomanometer | |
| Uganda | 207 (Mi187) | 1978 | "0-240 mm Hg" blood pressures, sphygmomanometer | |
| Uganda | 210a (BL12) | On one of MS4 (207-210) | ||
| Power: watt (W) and megawatt (MW) | ||||
| Australia | 2893c (BL?) | In (left) margin of double-sided booklet pane of 8 (2x (2890-2893)) | 2008 | "92 watts", saved |
| Poland | 2355 (Mi2647) | 1979 | "2 MW" power, broadcasting station | |
| Energy: kilowatt-hours (kWh) | ||||
| Australia | 2893c (BL?) | In (left) margin of double-sided booklet pane of 8 (2x (2890-2893)) | 2008 | "807 kWh", saved |
| Time: seconds (s) | ||||
| Canada | 1063 (Mi972) | 1985 | "15 s" flash timing, lighthouse, Sisters Islets | |
| Canada | 1064 (Mi973) | "4 s" flash timing, lighthouse, Pelee Passage | ||
| Canada | 1065 (Mi974) | "2 1/2 s" flash timing, lighthouse, Haut-fond Prince | ||
| Canada | 1066 (Mi975) | "10 s" flash timing, lighthouse, Rose Blanche | ||
| Canada | 1066b (BL4) | MS4 (1063-1066) | (As above) | |
| Estonia | 541 (Mi?) | 2006 | 3.19 "s", isophase timing, lighthouse | |
| Estonia | 542 (Mi?) | 6.23 "s", isophase timing, lighthouse | ||
| Estonia | 541-542 maxi | Two stamps on maxicard | (As above) | |
| Frequency: kilohertz (kHz) and megahertz (MHz) | ||||
| Austria | 739 (Mi1174) | 1964 | "MHz" radio frequencies | |
| Austria | 739 fdc | Stamp on FDC | ||
| Comoro Islands | 47 (Mi41) | 1960 | "3331-7260 kcs"1, radio frequencies | |
| Ireland | 974 (Mi904) | One of pair (974a (973-974)) | 1995 | "102.7 MHz", radio frequency |
| Ireland | 974a fdc | One of pair of stamps and cachet on FDC | ||
| Japan | None | Postal card | 1982 | "76.4 MHz, 80.4 MHz", broadcasting frequencies |
| Paraguay | None+label (Mi?+label) | Personalized stamp + label | 2011 | "680 kHz", (implied units), broadcasting frequency |
| Poland | 2355 (Mi2647) | 1979 | "227 kHz", broadcasting frequency | |
| Area: hectare (ha) and square kilometers (km2) | ||||
| Argentina | 2274 (Mi2879-2880) | Pair (2274 (a-b)), from MS20 (2274a (10x (2274 (a-b)))) | 2004 | "millions of hectares", native forest area |
| Argentina | 2274 fdc | Pair of stamps on FDC | ||
| China (People's Republic) | None | Postal card | 2002 | "Ozone hole has been as large as 24 million sq km" area (translated from the Chinese2) |
| Hungary | 2450 (Mi3170) | 1976 | "millionth hectare", reforestation | |
| Volume: liter (L) or (l) | ||||
| Australia | 2893c (BL?) | In (left) margin of double-sided booklet pane of 8 (2x (2890-2893)) | 2008 | "4.5/3 litre" dual-flush, and "35,000 litres", saved |
| Velocity/Speed: kilometer per hour (km/h) | ||||
| Argentina | 1331 (Mi1544) | 1981 | "80 km/h" (implied units), speed limit sign | |
| Argentina | 1331 fdc | Stamp on FDC | ||
| Germany (East) | 1682 (Mi2082) | 1975 | "60 km/h" (implied units), speed limit sign | |
| Japan | 2717c (Mi?) | One of MS10 (2717f (2717 (a-e)) | 2005 | "256 km/h" record speed, bullet train |
| Kenya | 122 (Mi120) | 1978 | "50 km/h" (implied units), speed limit sign | |
| Korea (North) | 2638 (Mi2821) | 1987 | various "10, 20, 60 km/h" (implied units), speed limit signs | |
| Mexico | 2554 (Mi?) | 2009 | "60 km/h" (implied units), speed limit sign | |
| New Caledonia | 456 (Mi651) | 1980 | "30 km/h" (implied units), speed limit sign | |
| Niger | 731 (Mi984) | 1986 | "80 km/h" (implied units), speed limit sign | |
| Niger | 732 (Mi985) | "60 km/h" (implied units), speed limit sign | ||
| Portugal | 1113 (Mi1146) | See detail | 1971 | "km/h" velocity/speed, anemometer wind trace (It's not clear whether the "150" is the speed, or if it's an unrelated number associated with the upper graph) |
| Portugal | 1113 fdc | Stamp on FDC | ||
| Romania | 3499 (Mi4415) | 1975 | "0-100 km/h" (implied units) velocities/speeds, car speedometer | |
| Other: various units | ||||
| Malaysia | 1263 (Mi1674C) | 2009 | "km/J" on analog dial (distance/energy, possibly for fuel economy of electric vehicles) | |
1"kcs" (kilocycles (per second)) is an old metric term for SI (modern metric system) "kHz" (kilohertz)
2Instead of the international symbol "km" (kilometer), the Chinese use the following characters 
.
3Australian Stamp Catalog (ASC) number
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