The MUYA GM63A Vibration Meter is a compact, pen-style tester for quick vibration checks on motors, bearings, and other rotating machinery. It measures acceleration (0.1-199.9 m/s2), velocity (0.1-199.9 mm/s), and displacement (0.001-1.999 mm) on a simple backlit LCD, running off a single 9V battery with auto shut-off to extend battery life. Its small footprint makes it easy to carry for spot-checks during equipment inspection rounds.