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2. Tachometer - Wikipedia

   en.wikipedia.org/wiki/Tachometer

   A tachometer (revolution-counter, tach, rev-counter, RPM gauge) is an instrument measuring the rotation speed of a shaft or disk, as in a motor or other machine. [1] The device usually displays the revolutions per minute (RPM) on a calibrated analogue dial, but digital displays are increasingly common.

3. Tacheometry - Wikipedia

   en.wikipedia.org/wiki/Tacheometry

   Wild brand subtense bar. Another device used in tacheometry to measure distance between the measuring station and a desired point is the subtense bar. [2] This is a rigid rod, usually of a material insensitive to change in temperature such as invar, of fixed length (typically 2 metres (6.6 ft)).

4. List of electrical and electronic measuring equipment

   en.wikipedia.org/wiki/List_of_electrical_and...

   Tachometer: Measures speed of motors Signal analyzer: Measures both the amplitude and the modulation of a RF signal Signal generator: Generates signals for testing purposes Spectrum analyser: Displays frequency spectrum Sweep generator: Creates constant-amplitude variable frequency sine waves to test frequency response Transistor tester: Tests ...

5. List of measuring instruments - Wikipedia

   en.wikipedia.org/wiki/List_of_measuring_instruments

   tachometer: revolutions per minute, rate of blood flow, speed of aeroplanes taximeter: distance travelled, displacement tensiometer: surface tension of a liquid theodolite: angle, in the horizontal and vertical planes thermometer: temperature tiltmeter: minor changes to the Earth tintometer: colour universal measuring machine: geometric ...

6. Tachymeter (watch) - Wikipedia

   en.wikipedia.org/wiki/Tachymeter_(watch)

   Tachymeter scale on a Citizen watch bezel. A tachymeter (pronounced / t æ ˈ k ɪ m ə t ər /) is a scale sometimes inscribed around the rim of an analog watch with a chronograph.It can be used to conveniently compute the frequency in inverse-hours of an event of a known second-defined period, such as speed (distance over hours) based on travel time (distance over speed), or measure distance ...

7. Tachograph - Wikipedia

   en.wikipedia.org/wiki/Tachograph

   The Daniel Tachometer has been known in the railway industry since 1844. [1] The Hasler Event recorder was introduced in the 1920s. [citation needed] Regulations.