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Difference between revisions of "Wikitravel:Measurements"

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When showing a measurement, use the '''local system of units''' for the destination you're describing. This is the system that travelers will see on road signs, local maps, menus, food packages, weather reports, etc.
 
When showing a measurement, use the '''local system of units''' for the destination you're describing. This is the system that travelers will see on road signs, local maps, menus, food packages, weather reports, etc.
  
For most of the world, this is the '''metric system'''. For the [[United States of America]], it's the '''"US standard"''' system (miles, gallons, pounds), which is similar to the '''Imperial''' system of the [[United Kindom]]. In some cases, the systems are mixed — for example, in the [[United Kingdom]], road distances are measured in miles and beer served by the pint, while meat and canned goods, for example, are measured in (kilo)grams. Milk is measured in both pints ''and'' litres. We favor accuracy over consistency.  
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For most of the world, this is the '''metric system'''. For the [[United States of America]], it's the '''"US standard"''' system (miles, gallons, pounds), which is similar to the '''Imperial''' system of the [[United Kingdom]]. In some cases, the systems are mixed — for example, in the [[United Kingdom]], road distances are measured in miles and beer served by the pint, while meat and canned goods, for example, are measured in (kilo)grams. Milk is measured in both pints ''and'' litres. We favor accuracy over consistency.  
  
 
The chief difference between the US standard system and the Imperial system is in the sizes of the pint and the gallon. The Imperial measures are 25% larger than the US measures. That means you get more drunk on a British pint, and you get more miles to the gallon on British roads!
 
The chief difference between the US standard system and the Imperial system is in the sizes of the pint and the gallon. The Imperial measures are 25% larger than the US measures. That means you get more drunk on a British pint, and you get more miles to the gallon on British roads!

Revision as of 22:08, 28 July 2005

We often have to use measurements in Wikitravel — for the distances between places, for the altitude of mountains, for the temperature of deserts, for the volume of a glass of beer. This style guideline gives some suggestions for how to specify and format measurements.

Contents

Use local units of measurement

When showing a measurement, use the local system of units for the destination you're describing. This is the system that travelers will see on road signs, local maps, menus, food packages, weather reports, etc.

For most of the world, this is the metric system. For the United States of America, it's the "US standard" system (miles, gallons, pounds), which is similar to the Imperial system of the United Kingdom. In some cases, the systems are mixed — for example, in the United Kingdom, road distances are measured in miles and beer served by the pint, while meat and canned goods, for example, are measured in (kilo)grams. Milk is measured in both pints and litres. We favor accuracy over consistency.

The chief difference between the US standard system and the Imperial system is in the sizes of the pint and the gallon. The Imperial measures are 25% larger than the US measures. That means you get more drunk on a British pint, and you get more miles to the gallon on British roads!

If the measurement spans multiple countries, use metric.

For articles that don't deal with a particular destination (like travel topics), use metric.

Provide conversions

It's easier for travelers to understand measurements if they're converted to their own country's units. For this reason, it's best to provide conversions for measurements into both metric and imperial, the two systems most widely used in the English-speaking world.

If the preferred units are metric, provide imperial measurements in parentheses after. If the preferred units are imperial, provide metric measurements in parentheses. If for some reason the local unit is neither metric nor imperial, provide first metric then imperial in parentheses afterwards.

Don't repeat conversions unnecessarily.

Accuracy

There is no need to convert between units to the nth decimal place. If you convert between units only state the conversion to the same number of significant digits as the original measure. If you want to show decimal places or be more accurate than a single unit allows, consider going down to a smaller unit. Remember, these measurements are going to be used by travellers, not scientists.

Examples

The following are some examples of good practice for measurements.

  • It's 2800 mi (4500 km) from Los Angeles to New York.
  • It's 815 km (506 mi) from Paris to Marseilles.
  • It's 490 km (305 mi) from San Antonio to Monterrey.
  • Pikes Peak is 14,110 ft (4301 m) high.
  • Mount Fuji is 3776 meters (12,388 ft) high.
  • Temperatures in Death Valley routinely hit 110°F (43°C).
  • In winter, Iqaluit gets down to -50°C (-58°F).
  • Just 2 miles (3 km) down the road in Glasgow you can get very good pints of beer.
  • Just 3 km (2 mi) down the road in Hamburg you can get very good half-liters of beer.
  • 5 km (3 mi) to the north is a national park. 5 km to the south is a lake.

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