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  2. Knot (unit) - Wikipedia

    en.wikipedia.org/wiki/Knot_(unit)

    The knot (/ n ɒ t /) is a unit of speed equal to one nautical mile per hour, exactly 1.852 km/h (approximately 1.151 mph or 0.514 m/s). [ 1 ] [ 2 ] The ISO standard symbol for the knot is kn . [ 3 ]

  3. Limit switch - Wikipedia

    en.wikipedia.org/wiki/Limit_switch

    A limit switch with a roller-lever operator; this is installed on a gate on a canal lock, and indicates the position of a gate to a control system A limit switch mounted on a moving part of a bridge In electrical engineering , a limit switch is a switch operated by the motion of a machine part or the presence of an object.

  4. Indicated airspeed - Wikipedia

    en.wikipedia.org/wiki/Indicated_airspeed

    A basic airspeed indicator with the indicated airspeed (IAS) indicated in knots ("Kt" or "Kts" or "KIAS") -- the most common unit of measure for airspeed. Some airspeed indicators in aircraft prior to the mid-1970s indicate in miles per hour plus knots (1 knot = 1.15 mph) or kilometers per hour (1 knot = 1.85 km/h).

  5. Railroad switch - Wikipedia

    en.wikipedia.org/wiki/Railroad_switch

    Switches were passed over at a speed of 560 km/h (348 mph) (straight) during the French world speed run of April 2007. [9] The US Federal Railroad Administration has published the speed limits for higher-speed turnouts with No. 26.5 turnout that has speed limit of 60 mph (97 km/h) and No. 32.7 with speed limit of 80 mph (129 km/h). [10]

  6. Metrication in the United States - Wikipedia

    en.wikipedia.org/wiki/Metrication_in_the_United...

    Speed limit signs in both mph and km/h in Blaine, Washington. Newer signs on state highways on the Hawaiian island of Kauaʻi also include distances in both miles and kilometers. [106] Mile markers along highways on the Island of Hawaii will indicate both units whenever the whole kilometer corresponds approximately with the whole mile (e.g., 5 ...

  7. Airspeed indicator - Wikipedia

    en.wikipedia.org/wiki/Airspeed_indicator

    The airspeed indicator (ASI) or airspeed gauge is a flight instrument indicating the airspeed of an aircraft in kilometres per hour (km/h), knots (kn or kt), miles per hour (MPH) and/or metres per second (m/s). The recommendation by ICAO is to use km/h, however knots (kt) is currently the most used unit.

  8. Airspeed - Wikipedia

    en.wikipedia.org/wiki/Airspeed

    Airspeed is commonly given in knots (kn). Since 2010, the International Civil Aviation Organization (ICAO) recommends using kilometers per hour (km/h) for airspeed (and meters per second for wind speed on runways), but allows using the de facto standard of knots, and has no set date on when to stop.

  9. Kilometres per hour - Wikipedia

    en.wikipedia.org/wiki/Kilometres_per_hour

    Speed limit sign in the Republic of Ireland, using "km/h.". The SI representations, classified as symbols, are "km/h", "km h −1" and "km·h −1".Several other abbreviations of "kilometres per hour" have been used since the term was introduced and many are still in use today; for example, dictionaries list "kph", [3] [4] [5] "kmph" and "km/hr" [6] as English abbreviations.

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