sun
A barometer.
a instrument used for measuring blood pressure
cardiogram
An instrument for measuring atmospheric pressure, used especially in weather forecasting.
Force meter is the instrument used in measuring force.
a sphygomanometer is actually a tool used for measuring blood pressure in your arteries. the "instrument" refers to a tool, but i do see where you got that.
A barothermograph is an instrument used for recording both pressure and temperature within the atmosphere.
An easily portable instrument used for measuring air pressure is called anedroid barometer.
Measuring cylinder
A protractor is used for drawing and measuring angles.
There are many tools used in recording and forecasting the weather. For example an anemometer Anemometer, an instrument for measuring wind speed. A hygrometer is used in determining the humidity of the atmosphere. The thermometer is for measuring temperature.
sphymomanometer is an instrument used for measuring thew bloodpressure. It is based on the the principle of pressure exerted by the column of blood on the unit area of the blood vessel . Both the systolic and diastolic pressure can be measured by this instrument.