Here is the Difference Between Speedometer, Odometer, & Tachometer of a Car
Speaking of speed measuring instruments in the automotive world, most people associate it with a car's speedometer. Almost everyone recognizes what a speedometer is, from automotive enthusiasts to the general public.
However, when discussing odometers and tachometers, some people still feel unfamiliar. In fact, knowing the differences between these three instruments is also quite important. To help you understand the functions and workings of these three instruments, check out the explanations below!
Differences Between Speedometer, Odometer, and Tachometer
Here are the differences between car speedometers, odometers, and tachometers:
1. Speedometer
Many may wonder what the function of a speedometer in a car actually is? A speedometer is a device used to measure the speed of a vehicle. Speedometers come in two types: analog and digital.
In the analog type, there is a needle indicator attached to a shaft connected to a gear wheel. The function of the needle on the speedometer is to indicate the speed of a vehicle.
The indicator used in the analog type starts from the number 0 to the maximum limit indicated on the speedometer. Meanwhile, in the digital type, there is no needle indicator.
The speed of the vehicle will be measured digitally with a numerical indicator that will continuously change according to the speed of the vehicle.
So, how does an electronic speedometer work? In the digital or electronic type, the speedometer is made by combining a pulser and magnetic pulses.
The measurement units for speedometers vary by country. If you live in America, the unit used is mph (miles per hour). However, if you live in Indonesia, the unit used is km (kilometers per hour).
Read Also: Let's Check How to Use Analog and Digital Ammeters Correctly
2. Odometer
An odometer is a device used to measure how far a vehicle has traveled. Additionally, the function of the odometer is also as an indicator of when the car should start an oil change. This device is usually located on the meter panel on the car's dashboard.
Currently, odometers are divided into two types: analog and digital (the meter panel displays numbers digitally). This device can serve as an indicator before purchasing a used vehicle. Additionally, it can also serve as an indicator of when the car should start being serviced.
Read Also: Tips for Identifying Signs of Odometer Reset in Used Cars
3. Tachometer
A tachometer is a device used to measure the rotational speed of an engine in terms of minutes or often referred to as RPM (Revolutions Per Minute).
This allows you to monitor how fast your car is moving. At the beginning of its introduction, the indicator was in the form of a needle that served as both a numerical indicator and a gauge of whether the car's speed is within safe or dangerous limits.
However, today tachometers have been developed into digital types. Thus, you can read your car's RPM easily, accurately, and more quickly.
Additionally, tachometers also help mechanics (technicians) to know the engine's idling RPM. This ensures that the engine performance remains optimal when you shift gears. Tachometers also help minimize the occurrence of engine over-revving.
That is the difference between speedometers, odometers, and tachometers that you need to know. Do you now understand these three automotive measuring instruments? If you do, make sure you regularly check the speedometer, odometer, and tachometer in your car.
If there are issues or damage to the car's speedometer or other parts, immediately service it at an official workshop or the nearest Daihatsu dealer. To ensure you receive proper handling. Because it is very dangerous and threatens safety if you neglect to check the condition of a malfunctioning or damaged car speedometer.
