Tachometer is a synonym of speedometer.
As nouns the difference between speedometer and tachometer
is that speedometer is a device that measures, and indicates the current speed of a vehicle while tachometer is a device for measuring the revolutions per minute (RPMs) of a revolving shaft, as with the driveshaft of an automobile.
speedometer
English
Alternative forms
* speedometre (nonstandard)
Noun
(
wikipedia speedometer)
(
en noun)
A device that measures, and indicates the current speed of a vehicle.
Such a device incorporating an odometer.
Synonyms
* (device that measures speed) tachometer
tachometer
English
Alternative forms
* tachometre (nonstandard)
Noun
(
en noun)
A device for measuring the revolutions per minute (RPMs) of a revolving shaft, as with the driveshaft of an automobile.
A device for measuring or indicating velocity or speed, as of blood, a river, a machine, etc.
Synonyms
* (device for measuring velocity) speedometer
Related terms
* tachymeter
