Designed for materials in the No.4 to No.100 (4.75mm to 0.150mm) sieve size range, this rugged W.S. Tyler? Economy sieve shaker supplied by Gilson is portable enough for field applications. An effective circular sifting motion is imparted to sieves via the 1/4hp motor. Built-in digital timer with 99 minute range is accurate to 0.1 second. SS-82 accommodates both 8in (203mm) and 12in (305mm) sieves with included adapter. The Tyler Economy Shaker will accept from six to thirteen 8in sieves and from four to eight 12in sieves, depending on selection of full, intermediate or half-height sieve frames. Mounting holes are provided in the frame for securing the unit to a table or bench-top. Dimensions: 28x22x34in (711x559x864mm), WxDxH. 115V/60Hz.