Pattern approval for measuring instruments

Courtesy: Pattern approval for measuring instruments

• Circumferentor
• Cross staff
• Goniometer
• Graphometer
• Inclinometer
• Mural instrument
• Protractor
• Quadrant
• Reflecting instruments
  • Octant
  • Reflecting circles
  • Sextant
• Theodolite
• Level (instrument)
• Laser line level
• Spirit level
• Mass- or volume flow measurement
• Gas meter
• Mass flow meter
• Metering pump
• Mass
• A pair of scales: An instrument for measuring mass in a force field by balancing forces.
• Balance
• Check weigher measures precise weight of items in a conveyor line, rejecting underweight or overweight objects.
• Linear momentum
• Ballistic pendulum
• Force (flux of linear momentum)
• Force gauge
• Spring scale
• Strain gauge
• Torsion balance
• Tribometer
• Angular velocity or rotations per time unit
• Stroboscope
• Tachometer
• For the value-ranges of angular velocity see: Orders of magnitude (angular velocity)
• For the ranges of frequency see: Orders of magnitude (frequency)
• Torque
• Dynamometer
• Prony brake
• Electricity, electronics, and electrical engineering
• See also: Electrical measurements and List of electrical and electronic measuring equipment
• Considerations related to electric charge dominate electricity and electronics. Electrical charges interact via a field. That field is called electric field.If the charge doesn’t move. If the charge moves, thus realizing an electric current, especially in an electrically neutral conductor, that field is called magnetic. Electricity can be given a quality — a potential. And electricity has a substance-like property, the electric charge. Energy (or power) in elementary electrodynamics is calculated by multiplying the potential by the amount of charge (or current) found at that potential: potential times charge (or current). (See Classical electromagnetism and Covariant formulation of classical electromagnetism)
• An instrument for detecting net charges, the electroscope.
• Electric charge
• Electrometer is often used to reconfirm the phenomenon of contact electricity leading to triboelectric sequences.
• Torsion balance used by Coulomb to establish a relation between charges and force, see above.
• For the ranges of charge values see: Orders of magnitude (charge)
• Torque wrench
• Energy carried by mechanical quantities, mechanical work
• Ballistic pendulum, indirectly by calculation and or gauging
• Measuring absolute pressure in an accelerated reference frame: The principle of a mercury (Hg) barometer in the gravitational field of the earth.
• Pressure (flux density of linear momentum)
• Anemometer (measures wind speed)
• Barometer used to measure the atmospheric pressure.
• Manometer (see Pressure measurement and Pressure sensor)
• Pitot tube (measures airspeed)
• Tire-pressure gauge in industry and mobility
• For the ranges of pressure-values see: Orders of magnitude (pressure)
• Inertial balance
• Katharometer
• Mass spectrometers measure the mass-to-charge ratio, not the mass, of ionised particles.
• Weighing scale
• For the ranges of mass-values see: Orders of magnitude
• Water meter
• Speed or velocity (flux of length)
• Airspeed indicator
• LIDAR speed gun
• Radar speed gun, a Doppler radar device, using the Doppler effect for indirect measurement of velocity.
• Speedometer
• Tachometer (speed of rotation)
• Tachymeter
• Variometer (rate of climb or descent)
• Velocimetry (measurement of fluid velocity)
• Gyroscope