Thin-film thickness monitor

•  Ammeter

  An ammeter is a measuring instrument used to measure the electric current in a circuit. Electric currents are measured in amperes (A), hence the name. Smaller values of current can be measured using a milliameter or a microammeter. Early ammeters were laboratory instruments only which relied on the Earth's magnetic field for operation. By the late 19th century, improved instruments were designed which could be mounted in any position and allowed accurate measurements in electric power systems,

  

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•  Katharometer

  A katharometer is a thermal conductivity device for determining one gas in a binary or pseudo-binary mixture. The thermal conductivity of a gas is inversely related to its molecular weight. Hydrogen has approximately six times the conductivity of nitrogen for example.

  

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•  Pressure measurement

  Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges. A manometer could also be referring to a pressure measuring instrument, usually limited to measuring pressures near to atmospheric. The term manometer is often used to refer specifically to liquid column hydrostatic instruments.

  

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•  Measuring instrument

  In the physical sciences, quality assurance, and engineering, measurement is the activity of obtaining and comparing physical quantities of real-world objects and events. Established standard objects and events are used as units, and the process of measurement gives a number relating the item under study and the referenced unit of measurement. Measuring instruments, and formal test methods which define the instrument's use, are the means by which these relations of numbers are obtained.

  

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•  Radar

  Radar is an object detection system that uses electromagnetic waves to identify the range, altitude, direction, or speed of both moving and fixed objects such as aircraft, ships, motor vehicles, weather formations, and terrain. The term RADAR was coined in 1940 by the U.S. Navy as an acronym for RAdio Detection And Ranging. The term has since entered the English language as a standard word, radar, losing the capitalization.

  

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•  Spectrometer

  A spectrometer (spectrophotometer, spectrograph or spectroscope) is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify materials. The variable measured is most often the light's intensity but could also, for instance, be the polarization state.

  

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•  Voltmeter

  A voltmeter is an instrument used for measuring the electrical potential difference between two points in an electric circuit. Analog voltmeters move a pointer across a scale in proportion to the voltage of the circuit; digital voltmeters give a numerical display of voltage by use of an analog to digital converter. Voltmeters are made in a wide range of styles. Instruments permanently mounted in a panel are used to monitor generators or other fixed apparatus.

  

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•  Wheatstone bridge

  A Wheatstone bridge is a measuring instrument invented by Samuel Hunter Christie in 1833 and improved and popularized by Sir Charles Wheatstone in 1843 . It is used to measure an unknown electrical resistance by balancing two legs of a bridge circuit, one leg of which includes the unknown component. Its operation is similar to the original potentiometer.

  

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•  Dosimeter

  Dosimeters measure an individual's or an object's

  

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•  Electrometer

  An electrometer is an electrical instrument for measuring electric charge or electrical potential difference. There are many different types, ranging from historical hand-made mechanical instruments to high-precision electronic devices. Modern electrometers based on vacuum tube or solid state technology can be used to make voltage and charge measurements with very low leakage currents, down to 1 femtoampere.

  

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• Measuring instruments by likeorhate
• Vacuum by likeorhate

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•  Road Rules: South Pacific

  

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•  UtoteM

  UtoteM, also spelled U-tote-M or U Totem, was a chain of convenience stores which operated until 1984, primarily in the southwestern United States. The chain experienced most of its growth under the leadership of LeRoy Melcher (1912-1999), who acquired the chain in 1950 and became its president in 1953. Melcher expanded UtoteM from ten stores to more than one thousand across thirteen states. UtoteM merged with Fairmont Foods in the late 1960s.

  

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•  La Perrière, Orne

  La Perrière is a commune in the Orne department in north-western France.

  

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• Norwegian Broadcasting Corporation by likeorhate
•  Leadville North, CO

  

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