Most Important Questions

 1. Ammeter – Measures electric current


 2. Voltmeter – Measures voltage (potential difference)


 3. Ohmmeter – Measures electrical resistance


 4. Barometer – Measures atmospheric pressure


 5. Thermometer – Measures temperature


 6. Hygrometer – Measures humidity in air


 7. Anemometer – Measures wind speed


 8. Seismograph – Measures earthquakes (seismic waves)


 9. Manometer – Measures pressure of gases and liquids


 10. Galvanometer – Measures small electric current


 11. Altimeter – Measures altitude (height above sea level)


 12. Lactometer – Measures purity of milk


 13. Hydrometer – Measures density or specific gravity of liquids


 14. Speedometer – Measures speed of a vehicle


 15. Tachometer – Measures rotation speed (RPM)


 16. Colorimeter – Measures concentration of a substance in a solution


 17. Photometer– Measures light intensity


 18. Spectrometer – Measures properties of light/spectra


 19. Electrometer – Measures electric charge or potential


 20. Pyrometer – Measures high temperatures, especially in furnaces


 21. Radiometer – Measures radiation energy


 22. Sonometer – Measures sound-related vibrations


 23. Dynamometer – Measures force, torque, or power


 24. Multimeter – Measures voltage, current, and resistance (combo of ammeter, voltmeter, ohmmeter)

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