He came up with a desperate measure to cover up his own failure.

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

What is the melting point of this substance in Celsius temperature?

This is my unused camera.

I use a pedometer every day to record the distance I walk.

I wonder where my sphygmomanometer is?

He measured muscle activity using an electromyograph.

The doctor used an electrocardiograph to check the condition of my heart.

The tachometer of my car has broken.

I check my step count every day with a pedometer.