Measuring instruments Measuring instruments The Absorption wavemeter is a simple device for the measurement of radio frequency energy at different frequencies. ...more on Wikipedia about "Absorption wavemeter"
An accelerograph can be referred to as a strong motion seismograph, or simply as an earthquake accelerometer. They are usually constructed as a self-contained box, more commonly now being connected directly to the Internet. ** ...more on Wikipedia about "Accelerograph"
An accelerometer is a device for measuring acceleration. An accelerometer inherently measures its own motion, in contrast to a device based on remote sensing. ...more on Wikipedia about "Accelerometer"
Actinometers are instruments used to measure the heating power of radiation. They are mainly used in meteorology to measure solar radiation. ...more on Wikipedia about "Actinometer"
The airspeed indicator is an instrument used in an aircraft to display the craft's airspeed, typically in knots, to the pilot. ...more on Wikipedia about "Airspeed indicator"
The alhidade or alidade is the part of a theodolite that rotates around the vertical axis, and that bears the horizontal axis around which the telescope (or visor, in early telescope-less instruments) turns up or down. ...more on Wikipedia about "Alhidade"
An Almucantar, also spelled almucantarat or almacantara, is a circle on the celestial sphere parallel to the horizon. Two stars that lie the same almucantar have the same altitude. ...more on Wikipedia about "Almucantar"
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An altimeter is an active instrument used to measure the altitude of an object above a fixed level. The traditional altimeter found in most aircraft works in measuring the air pressure from a static port in the airplane. Air pressure decreases with an increase of altitude - about one millibar (0.03 inches of mercury) per 27 feet (8.23 m) close to sea level. The altimeter is calibrated to show the pressure directly as altitude in accordance with a mathematical model defined by the International Standard Atmosphere (ISA). ...more on Wikipedia about "Altimeter"
An ammeter is a measuring instrument used to measure the flow of electric current in a circuit. Electric currents are measured in amperes, hence the name. The word "ammeter" is commonly misspelled or mispronounced as "ampmeter" by some. ...more on Wikipedia about "Ammeter"
The ampere balance (also current balance or Kelvin balance) is an electromechanical apparatus used for the precise measurement of the SI unit of electric current, the ampere. It was invented by William Thomson, 1st Baron Kelvin. ...more on Wikipedia about "Ampere balance"
An anemometer is a device for measuring the velocity or the pressure of the wind, and is one instrument used in a weather station. The term is derived from the Greek word "anemos" meaning wind. ...more on Wikipedia about "Anemometer"
An antenna analyzer (or noise bridge, or RX bridge) is a bridge where two legs are frequency-dependent complex-valued impedances. When the two impedances are the same the bridge will be balenced. Uisng this circuit it is possible to either measure the impedance of the antenna connected between ANT and GND, or it is possible to adjust an antenna until it has the same impedance as the network on the left hand side. The bridge can be driven either with white noise or a simple carrier (connected to drive). In the case of white noise the amplitude of the exciting signal can be very low and a radio receiver used as the detector. In the case where a simple carrier is used then depending on the level either a diode detector or a receiver can be used. In both cases a null will indicate when the bridge is balenced. ...more on Wikipedia about "Antenna analyzer"
An auncel (from the Anglo-Fr. auncelle, a confused derivation from l'auncelle, Ital. lancella, "a little balance"), is a balance formerly used in England; now, in dialectical use, a term for the weighing of meat by hand instead of by scales. ...more on Wikipedia about "Auncel"
An automated analyser is a laboratory machine designed to measure different chemicals in a number of biological samples quickly, with minimal human assistance. ...more on Wikipedia about "Automated analyser" Pure www.shortopedia.com. Pure Information Power.
B-H Analyzer mesures the AC magnetic characteristics of soft magnetic materials. It is used in manufacturing magnetic-related products such as hard disk, magnetic tape, etc. ...more on Wikipedia about "B-H Analyzer"
A Bainbridge mass spectrometer is a device used to determine isotopic masses. A beam of positive particles is produced from the isotope under study. The beam is subject to the combined action of perpendicular electric and magnetic fields. Since the forces due to these two fields are equal and opposite, the particles with a velocity equal to do not experience a resultant force. So, they pass freely through a slit, and are then subject to another magnetic field, transversing a semi-circular path and striking a photographic plate. The mass of the isotope is determined through subsequent calculation. ...more on Wikipedia about "Bainbridge mass spectrometer"
A barograph is a recording aneroid barometer. It produces a paper or foil chart called a barogram that records the barometric pressure over time. ...more on Wikipedia about "Barograph"
A hydrometer scale developed by French pharmacist Antoine Baumé to measure density of various liquids. Notated variously as: degrees Baume, degrees Baumé; B°, Be°, Bé°, Baume. ...more on Wikipedia about "Baumé scale"
A bolometer is a device for measuring incident electromagnetic radiation. It was invented in 1878 by the american astronomer Samuel Pierpont Langley ...more on Wikipedia about "Bolometer"
The Brannock Device™ is a measuring instrument invented by Charles F. Brannock for computing a person's shoe size. The son of a shoe industry entrepreneur, Brannock spent two years developing a simple means of measuring the human foot. He eventually improved on the wooden RITZ Stick, the industry standard of the day, and patented his first prototype in 1926. Brannock later formed the Brannock Device Company to manufacturer and sell the product, and headed the company until 1992 when he died at age 89. Today the Brannock Device is an international standard of the footwear industry, and the Smithsonian Institution houses samples of some of the first Brannock Devices. ...more on Wikipedia about "Brannock Device"
A calorimeter is a device used for calorimetry, the science of measuring the heat of chemical reactions or physical changes. The word calorimeter is derived from the Latin word calor, meaning heat. ...more on Wikipedia about "Calorimeter"
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A capacitance electroscope is a type of electroscope in which a dielectric material is sandwiched between the leaves of the electroscope. As a result, the charge accumlated on the leaves is increased. A special type of capacitance electroscope, in which the leaves were comprised of different metals, was commonly used to measure the Volta effect. ...more on Wikipedia about "Capacitance electroscope"
The ceiling projector or cloud searchlight is used to measure the height of the base of clouds (called the ceiling) above the ground. It is used in conjunction with an alidade usually 1000 ft (304.8 m) apart and wherever possible set at the same level. ...more on Wikipedia about "Ceiling projector"
A Ceilometer is a device using a laser or other light source to determine the height of a cloud base. An optical ceilometer uses triangulation to determine the height of a spot of light projected onto the base of the cloud; a laser ceilometer determines the height by measuring the time required for a pulse of light to be scattered back from the cloud base. ...more on Wikipedia about "Ceilometer"
A chart recorder is an electro- mechanical device that records an electrical or mechanical input trend onto a piece of paper (the chart). Chart recorders may record several inputs using different color pens and may record onto strip charts or circular charts. Chart recorders may be entirely mechanical with clockwork mechanisms or electro-mechanical with an electrical clockwork mechanism for driving the chart (with mechanical or pressure inputs) or entirely electronic with no mechanical components at all (a virtual chart recorder). ...more on Wikipedia about "Chart recorder" It's real http://www.shortopedia.com feeling! shortopedia
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