PURPOSE: A device for selecting bobbins depending upon kinds and diameters of them, comprising a sensor, a bobbin chuck, a transfer guide mechanism for them, a device for changing the direction of the guide, etc.

CONSTITUTION: A selector consisting of the distinction device A which examines the tray 1 and a bobbin, stops them or passes them with sending the bobbin b standing on the peg 2 of the disklike tray 1 by the conveyor 3, the chuck device B for grasping the top part of the bobbin b stopped by the device A, the lift C for raising and dropping the chuck device B, and the guide device D to guide transfer of the chuck device B. The distinction device A is provided with the sensor S1 to detect the mark of the tray 1 and to distinct the kinds of the bobbin b, and a sensor to be brought into contact with the outer periphery of the bobbin b, and to detect the wound diameter of it, etc.