Laboratory Concrete Mixer is laboratory type & is electrically operated. The counter balance drum is easy to tilt with 1½ to 2 cu .ft. mix. The total drum volume is, however, 3 cu. ft. Mounted on a sturdy rubber tyred stand; the drum is mounted for end discharge and equipped with 1/2 h. p. electric motor, suitable for operation on 220 volts. A. C. single phase.