Abstract: A power clamp including a dimension determination assembly. The dimension determination assembly can determine a dimension of single or multiple clamped parts. If the determined dimension of the clamped workpiece, part or parts is incorrect, a signal is generated to indicate the determined dimension is outside of an acceptable range.

Abstract: A degaussing head is mounted on a tape drive transport unit adjacent to a rotating reel of tape. The degaussing head is selectively energized by a signal indicating that the tape is to be erased. Preferably, the degaussing head takes the form of an E-shaped iron core driven by a coil supplied with attenuated DC current. The degaussing head is mounted on the door of the tape drive transport cabinet in such a manner that when the door is closed the legs of the degaussing head orthogonally span the tape in the reel to provide an attenuated alternating magnetic field for bulk erasing the tape as it is rotated past the head.