The most common instrument (tool) is a tape measure.
Barometer is a weather instrument. It measures the atmospheric pressure.
Rain Guage
It's a seismograph.
Luxmeter measures luminous intensity. The SI unit of luminous intensity is candela (cd).
A heartrate monitor. Many of them come with a strap that goes along the chest.
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
A sextant
A ruler
grams
Rulers...