What is the difference between speedometer and odometer

Odometer A device used to measure distance; it operates by recording wheel rotations. There are so many rotations, depending on the diameter of the wheel, in each mile. When this number of rotations has been reached, the counter clicks over, recording a mile. When these instruments were first introduced in motorized vehicles, the counters contained five digits; now they contain six. When the miles are maxed out at ,, the counter rolls back over to zero. Speedometers Appearing like a dial positioned above the odometer counter in the vehicle dash, the speedometer measures the speed of the vehicle.

It is thought that the early Romans used marks on the wheels of their chariots to measure and calculate their speed and distance. Today, applications are much more high tech, implementing the use of cables, sensors and magnets, or, in the case of even newer electronic systems, techs generators are used to measure the speed of the moving vehicle.

Calibration In order for speedometers and odometers to serve their purpose, they must all measure speed and distance in the same way. For this reason, the government enforces strict quality control measures, not only on all the individual components of these instruments, but also on their calibration.

Electronic calibration ensures that each instrument measures speed and distance similarly, no matter where it is installed. Application Making good use of speedometers means paying attention not only to what the readout is telling you about your travel, but also to the traffic laws and speed limits where you drive.

The odometer is helpful in letting you know when it is time for scheduled maintenance, as this happens about every 3, miles; it also lets you know the mileage on your vehicle, such as at purchase time, or can be a handy tool for measuring any distance from point A to point B. Teat vs. Neice vs.

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Carvana is a car-buying site that lets you pick the car you want from its selection of used vehicles. You can also apply for prequalification for a car loan through the site and have the vehicle delivered, depending on where you live.

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The site also serves as a vehicle marketplace where you can find new, used and certified pre-owned vehicles in your area. Edmunds ranks vehicles on the site using a deal-rating score to help you judge if the price is fair.

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Kelley Blue Book, which is owned by Autotrader, has been giving people visibility into car prices since You can use Kelley Blue Book values to understand what may be a fair price for your existing car. These sites allow you to find used cars for sale from regular people in your neck of the woods. Just remember, many sellers on these sites are individuals. That means you need to consider your safety when taking a vehicle for a test drive. Despite its old-school user interface, the site is still a go-to option for private party vehicle sales.

Along with dealerships, individuals can also list cars on Facebook Marketplace. CarGurus bills itself as the largest car-shopping website in the U. The site had the best search interface of any website we tested. It ranks vehicles by a proprietary deal score, and it automatically lists its picks for the best deals first. When browsing, you can limit your search radius to as close as 10 miles to your nearest location or expand it nationwide.

Wading through dozens of peer-to-peer sales websites can get tedious, but AutoTempest makes it easier to spot a deal. Looking to start your car search online but finish it at a dealership? These sites help you compare the inventory and pricing of dealerships near you. For more than two decades Cars. The site is more of a matchmaking service, with the sale of vehicles taking place offline.

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