To simplify the structure of a carrier device, inexpensively manufacture the device and make an attaching/detaching work easy by making the device have a constitution that two or more components are made to be carried by driving opposed metering pumps by the motions of pistons on piston rods which are reciprocated by an air pump.

A metering pump unit carrying two material components supplied within tanks 1, 2 is connected with the downstream end of each of two suction conduits 3, 4 connected with each tank 1, 2. Each unit has two sheets of plates 6, 7 coupled with each other by a fastening rod 8 and has a pump cylinder 9 which is tightly fastened between the plates 6, 7. Each unit is provided with many metering pumps 5 which are axially matched and are continuously arranged. Each pump 5 discharges fluid sucked from suction conduits 3, 4 by reciprocating motions of pistons 11 on piston rods 12, 13 connected with a rod 23 of an air motor 214 within a cylinder 9 via exit conduits 20, 21.