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The instrument, most commonly used in science, is a barometer. Related Information: The word, Barometer, is derived from baro, meaning weight or pressu…re, and meter, meaning measuring device. Barometers can be either analog or digital. The traditional analog barometer is known as an aneroid barometer. These are the round chrome or brass type that you would normally see on the bridge of a ship, many times accompanied by clock, temperature, and/or humidity gauge. For an accurate and reliable aneroid barometer, you should expect to pay $249.00 or more. For aneroid barometers, accuracy and reliability will wane incrementally below that price. The cost of scientific instruments, including barometers, are directly tied to accuracy and reliability. In some cases, however, as you go up in price, accuracy will remain stable but quality of materials and craftsmanship will drive the price upwards (i.e. use of thick solid brass or chrome). Digital barometers emulate the results achieved from an aneroid barometer (sometimes called a "nautical barometer). Their accuracy varies wildly and is not necessarily tied to price. For example, the barometers, in even the most reasonably priced (under $100.00) La Crosse Weather Stations, are exemplary performers. Anecdotal observations over many years show that the La Crosse variance from NIST traceable, accurate weather stations has been minimal (±.01). Other inexpensive manufacturer's products have nowhere near this steady and predictable tolerance. And many are as much as .06-.10 or 2-3mb off after initial calibration. All barometers are not the same. Most have elevation limitations. With the Weems & Plath barometers, specific elevations are designated by each individual product. So, be sure to probe for this information before you buy. Some barometers can be upgraded for high elevation use. But this is relatively expensive, and generally for those barometers to be used in terrain of 5,000ft. Digital barometers can have the same limitations. Again, be careful when you purchase. We are not aware of any low cost digital that will function correctly over 5,000-6,000 ft elevation. For high altitudes, or if you're a stickler for accuracy, you must consider the Davis, RainWise, WeatherHawk, or Columbia Weather Systems. Do not rely on any barometer above 5,000-6,000 ft for mission critical or safety applications, unless you are absolutely certain of its well defined and guaranteed specifications. Remember that as you begin to challenge the stated limitations of any scientific device, your inaccuracies will almost certainly increase as you approach the stated threshold. For example, a stated 6,000 ft elevation limit may function perfectly well up to 4,000 ft. Then, possibly a gradual fall-off in accuracy between 4,000-5,000ft. But then a rapid and possibly logarithmic increase in error percentage over 5,000ft. This is just an example and not meant to be a basis for calculating decreasing accuracy in any scientific instrument. The original analog barometer was the water ball. This instrument featured a glass reservoir at its bottom that fed into a narrowing tube that protruded upwards. As atmospheric pressure increased, the water was driven upwards into the tube, to indicate fair or improving weather conditions. Conversely, as the air pressure dropped, the water level in the tube fell, to indicate a change to more inclement weather. As the water level fell even lower in the tube, it became a more urgent indicator of impending foul weather.
A stethoscope is the device used to allow a medical (or other) technician or professional to listen to the internal body sounds. Links can be found below.
Not sure about pressure but wind speed is measured by an ANENOMETER. You may be able to meaure its pressure by some form of dynamometer (basically a spring-ba…lance) attached to a target-plate of known area. There may also be calculations using speed and barometric pressure.
manometer manometer A pressure gauge ... unless you call it a tire gauge. manometer
The instuments that measure pressure are hydrostatic and aneroid. A barometer, manometer, and tire gauge all measure pressure. Bordon gauges are industrial instruments that me…asure pressure. Guage, Barometer manometer Commonly called a tire pressure gauge. Answer A measurement of pressure is PSI (pounds per square inch). There are gages that measure PSI. The answer depends on what you are asking about: For measuring blood pressure you could use a manometer. For measuring tire pressure you could use a tire pressure guage. For measuring air pressure you could use a barometer. For measuring electrical pressure (also known as potential difference) you could use a voltmeter. Note There are lots of other things which may need to have their pressure measured, so when you ask a question about pressure, please say exactly which pressure you mean. Scroll down to related links and look at "Pressure measurement - Wikipedia".
A sphygmometer. (pronounced sfig-mo-met-er)
\n. A tonometer measures eye pressure.
It's not possible to measure both of those quantities with a singleinstrument. Wind speed . . . anemometer Air pressure . . . barometer
vacuum pressure gauge
They call it a Sphygmomanometer. (Sphyg mo manometer.) The word derives from the Greek for pulse, Sphyg. and Manometer for a pressure meter. For traditional reasons, the pre…ssure is still measured in the equivalent height of a column of mercury. Which is what was used originally in the manometer. inHg (Inches of mecury) The sphygmomanometer works by balancing air-pressure in an inflated cuff against the pulse pressure in the arm. A pressure gauge attached to the cuff indicates the pressure. The cuff is placed on the upper arm and then inflated. The pulse is listened to, using a stethoscope. The point at which the pulse can no longer be heard, is when the pressure of the cuff cuts off the blood supply and gives the upper reading, called the systolic. Then the pressure of the cuff is slowly released and the pulse listened to. The lowest pressure when the pulse can no longer be heard, is the Diastolic. This gives the two pressures of the heart, during a beat, at maximum pressure and when relaxed. These functions can be built into a machine, which uses a microphone to listen and an electric pump to control the cuff pressure. The computer displays the result on an LCD screen. The device was invented by Samuel Siegfried Karl Ritter von Basch in 1881. Scipione Riva-Rocci introduced a more easily used version in 1896. Harvey Cushing discovered this device in 1901 and popularized it.
manometer Commonly called a tire pressure gauge.
A Barometer measures atmospheric pressure.