HYDRAULICALLY ACTUATED, SELF-CONTAINED CONTROL DEVICES AND SERVO-MECHANISMS CONSISTING OF HAND-ACTUATED TRANSMITTERS AND RECEIVERS CONNECTED BY ONE OR MORE TUBES, BOTH REVERSIBLE AND NON-REVERSIBLE, FOR MANUAL OR AUTOMATIC POSITIONING, CONTROLLING AND DUPLICATING MOVEMENTS OF BRAKES, CLUTCHES, THROTTLES, GOVERNORS, VALVES, RHEOSTATS, PUMPS, REVERSE GEARS, ENGINE SPARK ADJUSTMENTS, ENGINE MIXTURE SETTING, TRANSMISSIONS, FIRE EXTINGUISHERS, FEED MECHANISMS, GRINDER SPINDLES, TRIPPERS, RELEASES, TRANSMITTERS, RECEIVERS, ACCUMULATORS, CONTROL AND ACTUATING LEVERS, HYDRAULIC LINES, CONNECTORS, DRAINAGE PLUGS, ADJUSTABLE AND FIXED PRESSURE CONTROLS, PROPORTION PRESSURE AND SEQUENCE OPERATION CONTROLS