0
The pointer that does not move except by a knob, usually on the front, is just for comparing the movement of the pointer which reads barometric pressure. By lining them up, you are able to detect slight movements easier. I think that's the only reason for that other pointer. Hope this helps.
What else can I help you with?
What is a barometer that uses a thin metal can?
Aneroid
How do you use the word aneroid barometer in a sentence?
ssdd
What is the difference between how air pressure is indicated in a mercury barometer and an aneroid barometer?
Usually no difference at all. They can both move a pointer around a circular scale. The scale can be calibrated in both Inches of Mercury (InHg) or Millbars (Mb). An aneroid system can lend itself more easily to a digital display.
Which liquid is used in an aneroid barometer a mercury b alcohol c none?
mercury
Why are aneroid barometers often more practical than mercury barometers?
The aneroid barometer is more durable and compact, and much easier to read. The only particular advantage of a mercury barometer is that it's a direct measurement -- there's no calibration involved. If you can measure the height of the column above the pool and you know the density of mercury, you have the pressure.
What is an aneroid barometer called?
Well, an aneroid barometer, is called an aneroid barometer- but, a barometer measures air pressure, and an aneroid barometer is a barometer that contains no liquid.
What is the definition of aneroid?
Containing no liquid; -- said of a kind of barometer., An aneroid barometer.
Who invented aneroid Barometer?
Lucien Vidie, French scientist, invented the aneroid barometer in 1843.
Does aneroid barometer use plastic?
no
What is the difference between Mercury barometer and a aneroid barometer?
their spelling is different.
An aneroid barometer is different from a mercury barometer in that it does not contain?
An aneroid barometer does not contain mercury. Instead, it uses a small, flexible metal box called an aneroid cell to measure air pressure changes. Aneroid barometers are safer and more portable than mercury barometers.
Does a aneroid barometer use alcohol?
No, an aneroid barometer does not use alcohol. It measures atmospheric pressure using a small, flexible metal box called an aneroid cell, which expands or contracts with changes in pressure. This movement is then converted into a reading on the barometer.
What is the difference between the aneroid barometer and a mercury barometer?
An aneroid barometer measures air pressure using a flexible metal box called an aneroid cell, whereas a mercury barometer uses a column of mercury to measure air pressure. Aneroid barometers are more portable and do not use toxic mercury like mercury barometers.
Which statement accurately describes a difference between a mercury barometer and an aneroid barometer?
One statement to accurately describe a difference between a mercury barometer and an aneroid barometer is that a mercury barometer is a closed tube containing mercury. An aneroid barometer is a closed, flexible container of gas.
What is a barometer that uses a thin metal can?
Aneroid
How does an aneroid barometer measure atmospheric pressure?
A barometer is an instrument used to measure atmospheric pressure. It can measure the pressure exerted by the atmosphere by using water, air, or mercury.An aneroid barometer is a barometer which measures pressure without using fluids!An aneroid barometer is somewhat different and uses a sealed chamber upon which the fluctuating atmospheric pressure acts. Through mechanical means a pointer is moved on a calibrated scale.
When would the barometer be used?
The most commonly barometer used today would be a Aneroid.
