A Vibrometer is an instrument used to measure the vibration of machines, structures, or surfaces. It detects parameters such as vibration velocity, displacement, and acceleration, which are crucial in monitoring the health of rotating equipment like motors, turbines, compressors, and pumps. The device typically works on the principle of a transducer, converting mechanical vibrations into electrical signals that can be displayed, recorded, or analyzed. Common types include contact vibrometers, where a probe touches the vibrating surface, and non-contact laser vibrometers, which use laser beams to detect vibration without physical contact. Vibrometers are widely used in predictive maintenance, quality control, and research to identify imbalance, misalignment, bearing faults, or structural weaknesses. By providing precise vibration data, they help prevent equipment failure, reduce downtime, and improve safety. Their portability, sensitivity, and accuracy make them indispensable tools in industries such as aerospace, automotive, manufacturing, and civil engineering.