You can use a spectrometer to examine the composition of a substance.

There are many 'keiri' (an alternative spelling for 'fu', a kind of bird) living in this lake.

My pedometer is aiming for 10,000 steps a day.

I measured the current using an ammeter.

We measure power using a wattmeter.

When I looked at the hygrometer, I realized that the humidity in the room was too high.

He repelled the enemy using the empty fort strategy.

He passed the exam using a crafty trick.

I use a heart rate monitor during my daily exercise.

I use a pulse rate monitor to check my heart rate every day.