To easily and accurately measure the handling time consumed for carrying an object in a manufacture process.

By executing a program inside a storage device 13, an arithmetic processor 12 inputs detection signals from a movement sensor 11, obtains a led-out length GL of a cord 11b indicated by the detection signal as a moving distance ML of a hand of an operator 10, counts duration during which the moving distance ML of the hand is equal to or more than a threshold S for handling operation judgment and stores the duration in the storage device 13 as the handling time TH. Then, the handling time TH is repeatedly counted and stored in such a manner and thus a history of the handling time TH is recorded in the storage device 13.