Houston, Tex.— Model 630 is a portable shaker, a device used to provide sensor verification in the shop or field. This self-contained device can measure acceleration, velocity, and displacement and provide a bright LED readout of the measured variable in either English or metric units. It is designed to verify performance of industrial accelerometers, velocity pickups, and most vibration switches. The built-in electrodynamic shaker is horizontally mounted in a suspension system that provides isolation for the enclosure. A reference accelerometer is built into the shaker element. Special vibration isolation feet minimize interference caused by vibration from outside sources. www.metrix1.com Metrix Instrument Co./PMC/BETA