The Speed Variation Accessory for Gilson Testing Screen Shakers (TM Models) allows precise control of vibration speed on Testing Screen machines. Control of vibration speed assures reliable separations of materials with specific gravities different from common mineral aggregates or for materials finer than No.4 (4.75mm). Features a remotely-mounted digital controller that displays stroke values between 450 and 650 strokes per minute.
Controller Dimensions: 6.1x4.3x7.5in (159x108x191mm), WxDxH.