What is Autorefractometer?
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It's an optical instrument used to check for astigmatism.  Remember that thing at the eye doctor that shoots a puff of air into your eyeball?  That's it.\n\n*shiver*      those things
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Infra red thermometer
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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.\n\nAnemometers may be divided into two classes, (1) those that measure the velocity, (2) those that measure the pressure of the wind, but as there is a close connection between the pressure and the velocity, a suitable anemometer of either class will give information about both these quantities.\n\n\nCup anemometers\nThe simplest type of anemometer is the cup-anemometer, invented (1846) by Dr. John Thomas Romney Robinson, of Armagh Observatory. It consists of three or four hemispherical cups, mounted one on each end of a pair of horizontal arms, which lie at equal angles to each other. A vertical axis round which the cups turn passes through the center of the arms; a train of wheel-work counts up the number of turns which this axis makes, and from the number of turns made in any given time the velocity of the wind during that time is calculated. The cups are placed symmetrically on the end of the arms, so it is easy to see that the wind always has the hollow of one cup presented to it; the back of the cup on the opposite end of the cross also faces the wind, but the pressure on it is naturally less, and hence a continual rotation is produced; each cup in turn as it comes round providing the necessary force. The two great merits of this anemometer are its simplicity and the absence of a wind vane; but if used without electronic data logging equipment it is not well adapted to leaving a record of the actual velocity at any definite instant, and hence it leaves a short but violent gust unrecorded. Unfortunately, when Dr. Robinson first designed his anemometer, he stated that no matter what the size of the cups or the length of the arms, the cups always moved with one-third of the velocity of the wind. This result was apparently confirmed by some independent experiments, but it is very far from the truth, for it was later discovered that the actual ratio, or factor as it is commonly called, of the velocity of the wind to that of the cups depends very largely on the dimensions of the cups and arms, and may have almost any value between two and a little over three. This had the result that wind velocities published in many official 19th century publications were often in error by nearly 60%.\n\nHot-wire anemometers\nHot-wire anemometers use a thermistor or other temperature measuring device heated up to some warm temperature. Air or other gases or fluids flow past the hot wire and cool it to a steady temperature, which depends on the flow rate. The change in resistance can be calibrated to changes in flows for a cheap way to measure flow rates.\nSonic anemometers\nSonic anemometers uses sound waves to measure wind speed and direction. They're capable of measuring the wind velocity in the X (east-west), Y (north-south), and Z (up-down) directions. Additionally, they can take measurements with very fine resolution, and the lack of moving parts makes them appealing to automated weather stations. Use of such anemometers is likely to increase in the future.\n\n\nWindmill anemometers\n \nAn aerovaneThe other forms of mechanical velocity anemometer may be described as belonging to the windmill type. In the Robinson anemometer the axis of rotation is vertical, but with this subdivision the axis of rotation must be parallel to the direction of the wind and therefore horizontal. Furthermore, since the wind varies in direction and the axis has to follow its changes, a wind vane or some other contrivance to fulfill the same purpose must be employed. An aerovane combines a propeller and a tail on the same axis to obtain accurate and precise wind speed and direction measurements from the same instrument. In cases where the direction of the air motion is always the same, as in the ventilating shafts of mines and buildings for instance, wind va
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A seismograph measures the strength and direction of earthquake waves. It records the tremors and compares their strengths on the Richter scale. A scale of one is a minor earthquake, while a scale of seven is severe.
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A digital tachometer generally uses a laser light to detect rotations and calculates the rpm. it uses the principle of reflection of light from a surface. the rotating shaft / teeth has got markings on surface. the device detects the interval between reoccurance of same mark/blank space and calculates the rpm.
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What do you want to know? Its a portable data aquisition device typically used for vibration monitoring. They are not real common.
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It is basically a u tube manometer.\n\nThe pressure of air in one side (air inside an air bag) of the u tube is measured by the excess of mercury level in the other tube.\n\nThe air bag is made to surround one’ arm and pressure of air inside the bag is increased by pumping air inside.\n\nBecause of high pressure the blood circulation below the arm stops.\n\nBy slowly releasing the pressure and noting the pressure at which circulation of blood starts is noted. This is the highest pressure and again at a lower pressure the pulse is noted this is the lowest pressure.\n\n Systole refers to the contraction of the heart and conventionally systolic arterial pressure is the highest pressure developed in arteries during the ventricular contraction of the cardiac cycle. Diastole refers to a relaxed heart muscle and diastolic pressure has conventionally meant the lowest arterial pressure during a heart cycle. The pulse pressure is related to the amount of blood being pumped per beat. It is the systolic minus the diastolic pressure.
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A laser Doppler Vibrometer is based on the principle of the detection of the Doppler shift of coherent laser light, that is scattered from a small area of the test object. The object scatters or reflects light from the laser beam and the Doppler frequency shift is used to measure the component of velocity which lies along the axis of the laser beam.
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The Richter scale measuring their intensity is a logarithmic scale.\n\nhttp://en.wikipedia.org/wiki/Richter_scale
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Well an easy one is the thermometer of corse for the temperature \n\nAnother will be your barometer this instament measures pressure of the atmosphere (lower pressure a good signal for bad weather) \n\nThe anamometer we use to measure wind speed and direction \n\nNow one of the ccolest instaments we have is a laser cieliometer...aka(LBC) this device measures cloud heights by firing an invisible laser into the air, however it is only good up to 12,000ft AGL (above ground level)\n\nTransmisometer-runway visual range\nWSR-88D(Radar)- storm location, movement, intesity, direction...ect\n\nThere are several instaments we use....one of the best resources other than this might be to go to the local news station.
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Try: http://earthquake.usgs.gov/research/monitoring/anss/ for definitions.
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With an anemometer is like three sticks with a little cup on each end, arranged at 120° at the top of a pole wich rotates faster or slower depending on wind speed. You can see them at ships and airports...
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That is micro meter. It is 10^ -6 m.
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Temperature measurement
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if you're talking shaft out of balance you need an accelerometer\nother two look for steps in something, as in something is there or not there.\nThe accelerometer measures force
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Brix is the measure of % sugar in a given sample. The instrument which is used to measure brix is called a refractometer.
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Try here.\n\nhttp://usa.autodesk.com/adsk/servlet/autoindex?siteID=123112&id=2253423