Its useful range is zones 5 to 7.

It has a useful range of 7 to 12 feet, and its effect can last for as long as 20 minutes.

As an acid-base indicator its useful range lies between pH 3.0 and 4.6.

It is a zwitterionic buffer with a useful buffering range of 6.1-7.5.

And it supported a useful range of file organizations with access methods to help in using them:

For this reason the useful range is approximately pK 1.

Stronger, but still far below the potentially useful range.

Usually it's the calibration that limits its useful range, not the capabilities of the meter itself.

This allows for faster lead time on warnings and extends the useful range of the radar.

It is simple, strong and reliable, as well as being able to bowl a useful range of deliveries.