A-A-50539, COMMERCIAL ITEM DESCRIPTION (CID): VIBRATORS, CONCRETE, ELECTRIC-MOTOR-DRIVEN (22-JUN-1992) [SUPERSEDING MIL-V-21731D]

A-A-50539, COMMERCIAL ITEM DESCRIPTION (CID): VIBRATORS, CONCRETE, ELECTRIC-MOTOR-DRIVEN (22-JUN-1992) [SUPERSEDING MIL-V-21731D]., This document covers commercial, lightweight, portable, double insulated, electric-motor-driven concrete vibrators. The vibrators covered by this commercial item description are intended for use in consolidating low slump, portland cement concrete.