Abstract: An embodiment manual seatback folding apparatus of an electric seat for a vehicle includes a shaft fastened to a seatback frame, wherein first and second end portions of the shaft are rotatably inserted into first and second seat cushion side frames, respectively, a first rotatable disk including a first locking recess, a second rotatable disk including a second locking recess and a pusher, a first manual control device detachably engaged with the first locking recess, a second manual control device to be connected to the first manual control device through a cable and detachably engaged with the second locking recess, and a switch device mounted on an outer surface of the second seat cushion side frame and configured to perform a switching operation in response to the pusher in a state in which the second rotatable disk is rotated in a folding direction.

Abstract: The underground inclinometer system includes a probe having a displacement measurement sensor measuring displacement of the ground, a cable controller controlling the length of a cable inserted into the ground to move the probe within an inclinometer pipe, and a ground displacement calculator calculating the displacement of the ground by using displacement measurement information measured by the probe and information on the length of the cable controlled by the cable controller.