PURPOSE: To enable connector removing and inserting pressure to be measured in non-destructive method by providing a distortion detection part in a fork and bonding a semiconductor distortion chip on that place, so as to detect the connector removing and inserting pressure.

CONSTITUTION: A semiconductor distortion detection element 3 is provided in a distortion detection part 2 of a fork 1 and connected to leads 5 via wires 4. When a connector removing and inserting pressure detection fork 11 is inserted into a female connector 12 to be measured, the distortion detection part 2 curved by a connector spring pressure causes distortion in the element 3 to generate electric output. Load is determined from this detection signal.