The digital vibration meter type vm-6 is a portable battery operated instrument used to measure vibration of any rotating electro-mechanical, hydraulic or pneumatic equipment. An electro-dynamic vibration transducer is used to pick-up the "vibration" and the electronic circuitry amplifies and filters the "vibration" which are then fed to a panel meter to read either peak to peak displacement or maximum velocity with special advantages like: instrument is small, light in weight, powered by batteries and can be taken to any place. Its applications are protection and testing of motors and monitoring machinery for vibration, vibration measurement of machine tools, continuous monitoring of vibration of turbo generators, etc. Also available are digital sound level meters, digital wind speed and direction indicator, digital anemometer, cyclic load energy saver [auto star-delta converter], etc.