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The ivory point in a Fortin barometer is a short (typically about 1 cm) conically-shaped piece of ivory positioned with its apex pointing vertically downwards just above the surface of the Mercury in the barometer's reservoir. It is positioned accurately during manufacture so that the tip of the ivory is in exactly the same horizontal plane as the zero mark of the scale which measures the height of the mercury column, and is known as the Fiducial Point.
Before reading the height of the mercury column, a user of the baromerter adjusts the level of mercury in the reservoir until its surface just touches the ivory point, at which level the height scale will give an accurate reading.
What else can I help you with?
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 equipment do you use to measure air pressure?
It is called a barometer, first developed in the 1600's
What is the most commonly used barometer?
The most commonly used barometer is the mercury barometer.However, it is not easy to transport but it gives more accurate results. Another type of barometer is Aneroid barometer which is easy to transport and handle.
What is a barometer what does it do?
a barometer is a tool used to detect the air pressure
What does the balloon barometer measure?
A balloon barometer measures atmospheric pressure.
Was the Ivory coast and Ghana french colonies?
at one point of time ivory coast and ghana were french colonies now they are not
Air pressure is typically measured with a?
Air pressure is measured with a barometer.
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 does a barometer has in it?
barometer has mercury inside it .
What is measured by using a barometer?
A barometer measures atmospheric pressure, which is the weight of the air above a certain point on Earth's surface. This measurement helps in predicting changes in weather conditions, such as the likelihood of rain or storms.
What measures HUMMITY?
a barometer so just do not feel bad the only reason i know that was cause i had to use a barometer in the 5th grade so.add. BUT if you wanted to measure Humidity then you would use a hygrometer or a dew point meter.
What is an example of a sentence using the word barometer?
The barometer measures atmospheric pressure.
What is called the barometer of a circle?
A barometer is an instrument used to measure atmospheric pressure. A circle does not have a barometer!
What is a weather instrument that starts with the letter B?
A barometer measures atmospheric pressure.
What is a barometer test?
What is the civilian barometer test?
How was Stonehenge used as a barometer?
It was not used as a barometer.
What is the plural of barometer?
The plural for barometer is barometers.
