Sieve Shaker-Hand Operated Leave a Comment / Cement Testing Equipment, General Laboratory Equipment / By 9admin Sieve Shaker-Hand Operated Sieve Shaker-Hand Operated Introduction This is a bench type model which is portable, sturdy and convenient for bench mounting. The side to side movement to the carrier which can take upto 7 sieves of 20cm diameter is through a chain of gears operated by a hand wheel.