speedometer
Sign in to savethumb|An animation of an Speedometer#Electronic|electronic [[Aston Martin speedometer's self-test routine, showing how an analogue speedometer hand may indicate the vehicle's speed]] thumb|A Ford Motor Company|Ford speedometer, showing both mph (outer) and km/h (inner), as well as an [[odometer in miles]] thumb|A digital, LCD speedometer in a [[Honda Insight]]
AI overview
A speedometer is an instrument in a vehicle that displays how fast the car is traveling, using either an analog needle dial or a digital LCD screen to show the speed in miles per hour, kilometers per hour, or both. Speedometers matter because they allow drivers to monitor their vehicle's speed and comply with speed limits, which is essential for safe and legal driving.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Machine.image
- Toyota Corolla 2016 speedometer.jpg
- Machine.caption
- A modern speedometer in a Toyota Corolla
- Machine.classification
- Gauge
- Machine.industry
- Automotive
- Machine.application
- Speed measurement
- Machine.inventor
- Josip Belušić
via Wikipedia infobox
Article
16 sectionsContents
- History
- Operation
- Mechanical
- Electronic
- Virtual
- Bicycle speedometers
- Error
- International agreements
- Australia
- United Kingdom
- United States
- Regulation in the US
- GPS
- See also
- References
- External links
thumb|An animation of an Speedometer#Electronic|electronic [[Aston Martin speedometer's self-test routine, showing how an analogue speedometer hand may indicate the vehicle's speed]] thumb|A Ford Motor Company|Ford speedometer, showing both mph (outer) and km/h (inner), as well as an [[odometer in miles]] thumb|A digital, LCD speedometer in a [[Honda Insight]]
A speedometer or speed meter is a gauge that measures and displays the instantaneous speed of a vehicle. Now universally fitted to motor vehicles, they started to be available as options in the early 20th century, and as standard equipment from about 1910 onwards. Other vehicles may use devices analogous to the speedometer with different means of sensing speed, eg. boats use a pit log, while aircraft use an airspeed indicator.