Another primary use for this instrument lies in the environmental field.

The primary use of the park is as a recreation area.

Its primary use is for breaking down doors and windows.

After that time, its primary use has been as a supply store.

Family support is a term that has three primary uses.

The primary use of a gun is as a weapon.

As that was its primary use, it got me off on another track.

The primary use for humans is as a food supplement.

The primary use of the hundred area today is for census data.

But what was the primary use for such a power?