A rotary switch assembly for mounting on a disconnect switch in an electrical enclosure includes a base and a rotor which is rotatably coupled to the base. The at least one file may include a data cluster including a plurality of data blocks, each data block storing at least some of the video data, andor a plurality of first pointers sequentially arranged and respectively indicating the plurality of data blocks. The phase-separated domain and the volatile substance chemically interact with each other. The processor is configured to prepare a moving image data based on the received echo signal. Each additional metering section is also selectively disengageable to interrupt driving of the respective additional metering section by the rotary shaft assembly while the first metering section remains driven.