Webster’s Revised Unabridged Dictionary · 1913
Dialing
Di′al·ing (dī′al·ĭng), n. 1. The art of constructing dials; the science which treats of measuring time by dials. [Written also dialling.]
2. A method of surveying, especially in mines, in which the bearings of the courses, or the angles which they make with each other, are determined by means of the circumferentor.