A novel, adjustable locking windage and elevation turret assembly capable of being re-zeroed, for the improved functionality and accuracy of a scope. By repetitive cycles a composite integrated film is produced. The metal layers are closely spaced and separated by a desirable dielectric to achieve an interconnect having a characteristic inductance that is much lower than typical microstrip transmission lines formed by a metal trace over the semiconductor substrate or a dielectric stack that includes the semiconductor substrate. The head is arranged to clamp against a part of a front side of the cutting insert. The communication apparatus determines that the transfer status of the user frame in the ring network is normal when the sent test frame is received via a second communication port connected to a transfer channel in a second direction in the ring network in a predetermined manner. The image pickup apparatus comprises a processing device for electronically enlarging an image picked up by an image pickup unit, a setting device for setting compressing operation for the image picked up by the image pickup unit, and a control device to restrict operation of the processing device in accordance with the compressing operation for the image which is set by the setting device.