"I'm busy," he said, checking his compass against a map.
Now and then he checked his compass to see where he was going.
Murdock had checked his compass twice in the past five minutes and was sure they were on the right line.
"Come on," he said when he had checked his compass.
Uthacalthing checked his compass and wondered if the hills should look familiar.
Schroeder checked his internal compass, and again started in a direction he hoped would take them to the far side of the city.
From time to time he would check his compass and make small corrections to our course.
The other diver checked his compass and led the way.
"Roger control," he answered, checking his compass and changing course.
Checking his compass with great care, he steered another course heading.