1. Compact size easy handling 2.Guard against mechanical malfunction 3.Automatic switch off 4.digits LCD 5.easy handling High sensitivity Portable Vibration Meter/Pen HG6400Detailed product information:Features: • Used for fast failure detecting of motor, electric fan, pump, air compressor, machine tools and so on.• Compact size, small weight, easy handling• Prompt testing of vibration on the ...