Specialized measuring instruments for measuring and monitoring vibration conditions of machinery and structures in manufacturing sites. Includes vibration level meters, vibration analyzers, vibration pickups, accelerometers used for detecting unbalance in rotating machinery, bearing abnormalities, and resonance phenomena. Essential for predictive maintenance and quality control of machine tools, pumps, compressors, motors, etc. Handles models with FFT analysis functions and wireless-compatible types. Clearly distinguished from noise meters and acoustic measuring instruments as measuring instruments specialized for mechanical vibration with different measurement targets.