Handler having position correcting function and method of loading uninspected device into measuring socket

A handler for picking up a predetermined number of devices from an uninspection tray, on which the devices are loaded, loading the devices for inspection in measuring sockets on a device tester, and returning the devices after the inspection, the handler comprising:

• a plurality of device holding portions, each device holding portion capable of picking up a device from the uninspection tray;
• and
• position correcting means for correcting a position of each device holding portion relative to a corresponding measuring socket, based on a posture/position information of the device held on the device holding portion;
• each device holding portion including:
• suction means for sucking the device;
• and
• a pushing member separated from the suction means and capable of pushing the device loaded on the measuring socket by a predetermined pushing force,
• the position correcting means including:
• a position correcting mechanism operable for each device holding portion, the position correcting mechanism capable of correcting a position of the suction means relative to the measuring socket on which no device is loaded, based on the posture/position information, and also capable of correcting a position of both of the pushing member and the suction means relative to the device loaded on the measuring socket.