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It consists of a U-shaped glass tube with two separate temperature scales set along each arm of the U. One of these is for recording themaximum temperature encountered and the other for the minimum temperature. The arms of the U-shaped tube terminate in sealed glass bulbs. The bulb at the top of the minimum reading scale arm is full of alcohol, the other contains a vacuum (or low pressure alcohol vapour). [1]

[2]

In the bend of the U is a section of Mercury. This is pushed around the tube by the thermal expansion and contraction of the alcohol in the first bulb as it responds to the external temperature. The near vacuum in the other bulb allows free movement of the alcohol and mercury. It is the alcohol which measures the temperature; the mercury indicates the temperature reading on both scales.

The thermometer shows a reading at the top of the mercury section on both the maximum and minimum scales; this shows the current temperature

The maximum and minimum readings are recorded by two small steel markers which are sprung into the capillary tube so that they cannot easily slide unless a small force is applied to them.

Before a maximum or minimum reading can be taken, both markers must be returned to the top of the mercury, usually by hand using a small magnet to slide them along the tube. Any change in temperature after that time will push one of the markers along with it.

If the temperature is rising, then the maximum scale marker will be pushed. If it falls after the reset, then the moving mercury will push the minimum scale marker. Often both things happen one after another as the temperature changes, say through a twenty-four-hour period (see diurnal temperature variation). The markers thus record the furthest point reached by the mercury in each arm of the tube. They record the extremes of temperature experienced by the device since it was last reset. The thermometer is usually reset every day, but if left for longer the readings would show the highest and lowest temperatures encountered since the instrument was last reset.

To take a reading, the positions of the ends of the markers nearest to the mercury are examined. Their positions on the maximum and minimum scales show the highest and lowest temperatures encountered over the period of measurement

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A labelled diagram the six's thermometer?

the use of the six's maximum and minimum thermometer is the find the highest and the lowest temperature for a day. At the meterological station this instrument is usually kept in a stevenson screen...lolz


What does a six's thermometer measure?

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Six's thermometer is a thermometer which can measure the maximum and minimum temperaturesreached over a period of time, usually during a day.


What is a sixes thermometer?

A Six's thermometer is a thermometer invented by James Six, which is capable of measuring the maximum and minimum temperatures during a given time. This makes it very useful for measuring extreme temperatures.


What is the application of a Six's thermometer?

A Six's thermometer is typically used in meteorology to measure the minimum and maximum temperatures over a period of time. It consists of two mercury columns that are moved by the mercury in the thermometer to indicate the highest and lowest temperatures reached.


How do you calculate the sensitivity if the thermometer?

Sensitivity of a thermometer is calculated by dividing the change in temperature measured by the thermometer by the change in the actual temperature. This gives a measure of how accurately the thermometer can detect small changes in temperature.


How can you measure a body temperature?

What kind of thermometer you use to measure the body temperature


Is a thermometer a example of an independent variable?

Absolutely, the thermometer is independent of any other measuring device, therefore the actual temperature is dependent on the reading that is taken off the thermometer.


Who invented the maximum-minimum thermometer?

JAMES SIX invented the Maximum and Minimum thermometer in 1782.


Who invented Six's Maximum and minimum thermometer?

James Six invented it in the year 1782


How do you use a science thermometer?

The same way you use a non-science thermometer.


When would you use regular thermometer?

Use a regular thermometer to test your body (or a child's body) for fever. Use a meat thermometer when cooking meat, and an outdoor thermometer to check the weather outside.