This old battery is no longer usable.

I mixed the pancake batter with my new whisk.

He is well-versed in the use of hidden weapons.

This compressor is very efficient.

My digestive organ is healthy.

He spoke to the people at the assembly using a loudspeaker.

If you press this switch, the lights will turn on.

The hot water heater has broken, so we need to have it repaired.

I bought a new medical thermometer.

This meter is capable of accurate measurement.