an anemoeter
There are many things that could happen as the altitude of the sun increases. As altitude increases the temperature usually does too.
How high the sun is in the sky. The angle between the horizon and the sun. When the sun is directly overhead (eg, at the equator) the solar altitude is 90°. In Canberra in winter, the solar altitude is 30°.
?? strange question... the sun isn't in our atmosphere so it can't have an 'altitude' it just has a distance away from us.
bolometer
a tape measure
Used to be trigonometry, but now they use GPS.
It is an astronomical instrument for taking the altitude of the sun or stars
A sextant.the sextonan astrolabe
what are all the instruments use to measure altitude
A backstaff is a an early navigational instrument for measuring the altitude of the sun and hence calculating latitude.
The sextant is used in celestial navigation.
Depends what you mean by instrument but I guess the sun, mmon and stars are pretty good indicators to use.
fathometer is an instrument used to measure the altitude of na object above a fixed level , fathometer measures the sea depth
It is a mediaeval instrument for measuring the altitude of the sun and other sky objects, now replaced by the sextant.
An altimeter does not actually measure altitude directly, but rather just atmospheric pressure. So an altimeter is actually a barometer created for a specific purpose. See related link The altimeter measures the height above the ground and has a pointer which is adjustable depending in which air field you are taking off on. it measures the pressure of the air as you get higher off the ground the pressure reduces therefore it is able to determine your height above ground.
An altimeter is a piece of apparatus which measures someone's altitude.
A tape measure.