Duplicating Devices, Automatic—See "Spacing Devices."

Gage Movement, Cable—A steel wire cable wound around a drum which when revolved pulls the back gage forward or backward.

Gage Movement, Chain—A connection for operating the back gage to and fro; principally used with automatic spacing devices.

Gage Movement, Power—A friction drive variable speed connection from the main driving shaft to move the back gage forward and backward.

Gage Movement, Screw and Hand Wheel—This is used on the simpler, cheaper styles of cutting machine devices. It is slower than the cable device, but more reliable.

Gage Movement, Automatic Spacing Device—This quickly moves the back gage and the pile forward a given distance without measuring for each cut, thus largely increasing production.

Grease Cups—Receptacles with a screw top containing lubricating grease, which is forced a little at a time upon the bearing when the screw top is turned, or which starts to melt and flow if the bearing warms.

Grooved Table—Means slight rounded depressions lengthwise in the back table in which the back gage fingers travel, extending slightly below the table surface to catch the lowest sheets and prevent them from wedging under the back gage.

Hand Clamping Wheel—Is generally connected to the clamp by a worm and gears (or directly by a screw). A force of one pound exerted on its rim holds the work with about one hundred and fifty pounds pressure and correspondingly more for each additional pound.

Indicator—Generally a steel ribbon ruled to sixteenths of an inch, reading the distance from the front face of the back gage to the cutting edge of the knife.