A system for displaying images is provided. The gimbal assembly includes dampeners on coextending gimbal arms gimbally supporting an air bearing slider to dampen vibration of the air bearing slider excited by air bearing vibration modes. An oxide layer is formed to a specific thickness on both the photodiode region and a part of the gate electrode. In this ultrasonic flow meter, the transmission of vibrations between the transducer and fluid inside the measuring pipe can be carried out uniformly. The RFID edge server can have a PLC API to allow the RFID edge server to control and receive data from devices.