Carlton looked on what he had got, and his eyes closed in a calculation beyond his powers in mental arithmetic; he had to take a pencil to it, and then a foot-rule to the blackened courses, and presently a pair of Compasses to the plans in the study.
"Peccavi"
E. W. Hornung
But you had the wrist Compasses, didn't you?
"The Electronic Mind Reader"
John Blaine
The boys had stressed that Compasses were essential because low visibility in the waters off Spindrift made it very easy to lose one's sense of direction.
"The Electronic Mind Reader"
John Blaine