The Fluke 805 FC Vibration Meter is a handheld device that measures vibration levels on machinery. It is designed to help users identify and diagnose potential problems with rotating machinery, such as unbalance, misalignment, and bearing wear. The 805 FC features a built-in accelerometer that measures vibration in three axes, and it can be used to measure both overall vibration levels and specific vibration frequencies. The meter also includes a built-in laser pointer that can be used to align the meter with the center of the rotating shaft. The 805 FC can be used to measure vibration levels on a variety of machinery, including pumps, motors, fans, and compressors. It is a valuable tool for maintenance and reliability professionals who need to identify and diagnose potential problems with rotating machinery.