PROOF.—The rough edges of certain leaves left uncut by the plough, are “proof” that the book is not cut down (see also WITNESS).
RASPED.—The sharp edge taken off mill-boards.
REGISTER.—The ribbon placed in a volume for a marker. A list of signatures attached to the end of early-printed books for the use of the binder. In printing—when on looking through a leaf the print on the recto and verso is not exactly opposite, it is said to be out of register.
ROLLING MACHINE.—A machine introduced to save the labour of beating, the sheets being passed between two revolving cylinders.
ROLLS.—Cylindrical ornamental tools used in finishing.
RUNNER.—The front board used in cutting edges.
RUN-UP.—When the back has a fillet ran from head to tail without being mitred at each band, it is said to be “run-up.”
SAWING-IN.—When the back is sawn for the reception of the cord in sewing.
SAWING MACHINE.—A machine for sawing the backs of books quickly.
SETTING THE HEAD-BAND.—Adjusting the leather in covering so as to form a kind of cap to the head-band.