manual (adj.)

"of or pertaining to the hand; done, made, or used by hand;" c. 1400, from Latin manualis "of or belonging to the hand; that can be thrown by hand," from manus "hand, strength, power over; armed force; handwriting," from PIE root *man- (2) "hand." The military manual exercise (1760) is "the art of handling the rifle and other arms with precision and according to the prescribed method."

early 15c., "small service book used by a priest," from Old French manuel "handbook" (also "plow-handle"), from Late Latin manuale "case or cover of a book, handbook," noun use of neuter of Latin manualis "of or belonging to the hand; that can be thrown by hand," from manus "hand, strength, power over; armed force; handwriting," from PIE root *man- (2) "hand." Meaning "a concise handbook" of any sort is from 1530s. The etymological sense is "small book such as may be carried in the hand or conveniently used by one hand."