Use a level if you have one; otherwise mark the appropriate interval and measure down from the ceiling again.

He bowed his head and after an appropriate interval looked up and spoke emphatically.

Then, after an appropriate interval, she called softly to her runner.

"Now," she said, after an appropriate and pleasant interval, "just what was my 'thought for the week'?"

Someone's sending a pulse directly into my systems, at the appropriate intervals.

The association gives opportunities to exchange our views at appropriate intervals.

She nodded at what Coretti took to be appropriate intervals.

Data noted their responses, waited an appropriate interval of a few seconds, then continued.

I was no longer interested in the meeting, and, after an appropriate interval of a couple of minutes or less, started to leave with Louis.

At appropriate intervals the cook brought him food and coffee.