PURPOSE: To enhance the cost-performance of an apparatus by a method wherein the loading operation of an uninspected head onto a test disk for a levitation- amount measuring device and an electromagnetic-conversion characteristic measuring device is performed by one common carriage mechanism.

CONSTITUTION: A levitation-amount measuring device 4 and an electromagnetic- conversion characteristic measuring device 5 are arranged in parallel. In the measuring device 4, a glass disk 4b is mounted on a spindle 4a, and a levitation- amount measuring part 4d is installed. In the measuring device 5, a magnetic disk 5b is mounted on a spindle 5a, and an electromagnetic characteristic measuring part 5d is installed. The following are installed: a common carriage mechanism 8 which is common to both measuring devices 4, 5; and a movement mechanism 9 which is composed of a guide rail 9a installed between both devices, a drive part 9b moving the carriage mechanism 8 along it and a control circuit 9c for the drive part. When an inspection is executed, the drive part 9b is controlled by the control circuit 9c, the common carriage mechanism 8 is moved and stopped at the position of the levitation-amount measuring device 4, an uninspected head 1 is mounted on the mechanism 8 and a levitation amount is measured.