your Brain
planimeter
http://en.wikipedia.org/wiki/Planimeter
A sextant.
by turds
Miles measures distance. Square miles measures area. Therefore, you can not compare the two. It is like comparing feet and cups.
The area of square is : 36.0
36 m
thermometer
A rain gauge measures in inches because it collects and measures the amount of precipitation that has fallen in an area.
Try a tape measure and a calculator to measure surface area.
A seismograph is an instrument used to measure movement of earthquake. It measures the seismic waves of that area.
This instrument is a balance.
A tiltmeter measures changes in the tilt of the earth. :)A tiltmeter is an instrument that measures changes in the tilt of the earth. :)
A calorimeter measures heat. In contrast, a thermometer measures temperature.A thermometer bolometer - an instrument that measures heat radiation; extremely sensitive calorimeter - a measuring instrument that determines quantities of heatHeat is measured with a ThermometerThermometerThermometer or calorimeterThermometerthermometerHeat is measured with a thermometer.
A thermometer measures molecular energy.
a calender
ruler
An aeroplane
a creep meter