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In physics and engineering, measurement is the activity of comparing physical quantities of real-world objects and events. Established standard objects and events are used as units, and the measurement results in a given number for the relationship between the item under study and the referenced unit of measurement. 'Measuring instruments' are the means by which this translation is made. All measuring instruments are subject to varying degrees of instrument error.
Physicists use a vast range of instruments to perform their measurements. These range from simple objects such as rulers and stopwatches to electron microscopes and particle accelerators. Virtual instrumentation is widely used in the development of modern measuring instruments.

★ Mass

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★ Balance

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★ Weighing scales

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★ Mass spectrometer

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★ Katharometer
:History of weights and measures

★ Time

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★ Calendar

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★ Chronometer

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★ Clock

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★ Atomic clock

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★ Radiometric dating
:Timeline of time measurement technology

★ Length (i.e., distance)

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★ Altimeter (measures height)

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★ Architect's scale

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★ Caliper

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★ Engineer's scale

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★ Gauge blocks

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★ Interferometer

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★ Micrometer

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★ Pi tape

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★ Odometer

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★ Opisometer

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★ Ruler

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★ Tape measure

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★ Laser rangefinder

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★ Ultrasound distance measure

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★ GPS

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★ Electronic distance meter

★ Area

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★ Planimeter

★ Angle

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★ Cross staff

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★ Octant

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★ Protractor

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★ Sextant

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★ Theodolite

★ Temperature

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★ Thermometer

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★ Thermocouples

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★ Thermistors

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★ Pyrometers

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★ Electromagnetic spectroscopy

★ Humidity

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★ Hygrometer

★ Pressure

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★ Barometer

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★ Manometer

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★ Pitot tube (used to determine speed)

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★ Anemometer (used to determine wind speed)

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★ Tire-pressure gauge

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★ Sphygmomanometer (used to determine Blood pressure)

★ Flow

★ pH

★ Level

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★ Spirit level

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★ Laser line level

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★ Dumpy level

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★ Tiltmeter

★ Radiation

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★ Geiger counter

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★ Nichols radiometer

★ Sound

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★ Sound level meter

★ Light

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★ Photometer

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★ Spectrometer

★ Speed

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★ Speedometer

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★ Tachometer (speed of rotation)

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★ Airspeed indicator

★ Torque

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★ De Prony brake

★ Electronic test equipment measuring electrical properties

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★ Electrometer (measures charge)

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★ Ammeter (measures electrical current)

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★ Galvanometer (measures current)

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★ Ohmmeter (measures resistance)

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★ Voltmeter (measures voltage)

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★ Wheatstone bridge

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★ Multimeter (measures all of the above)

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★ Oscilloscope

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★ Watt meter (measures power)

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★ Electric energy meter (measures energy)

★ Hardness

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★ Durometer

★ Density

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★ Aerometer

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★ Pycnometer

★ ''Uncategorized''

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★ Colorimeter (measures absorbance, and thus concentration)

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★ Radiometry

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★ Sicroscope

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★ Spectroscope is an important tool used by physicists.
Note that the alternate spelling "-metre" is never used when referring to a measuring device.

Contents

See also

See also

★ Timeline of temperature and pressure measurement technology

★ lists specialized measuring instruments