ALMCO'S high-frequency ultrasonic cleaning machine with an agitated immersion feature provides even greater cleaning power. The two heavy-duty models of the new machine move a load of parts through 60 vertical 4-in. strokes per minute, while ultrasonic energy and surging action of the cleaning fluid removes dirt from cracks and crevices with ultimate efficiency. There is a third, bench-top model available, but it does not have agitation.