Y strainer [ Y-type strainer | wye-type strainer | Y-pattern strainer ]

Definition: Voluntary, repetitive, stereotyped, nonfunctional (and often rhythmic) movements that do not form part of any recognized psychiatric or neurological condition. When such movements occur as symptoms of some other disorder, only the overall disorder should be recorded. The movements that are of a non self-injurious variety include: body-rocking, head-rocking, hair-plucking, hair-twisting, finger-flicking mannerisms, and hand-flapping. Stereotyped self-injurious behaviour includes repetitive head-banging, face-slapping, eye-poking, and biting of hands, lips or other body parts. All the stereotyped movement disorders occur most f ...[+++]requently in association with mental retardation (when this is the case, both should be recorded). If eye-poking occurs in a child with visual impairment, both should be coded: eye-poking under this category and the visual condition under the appropriate somatic disorder code. | Stereotype/habit disorder

sewer screen labourer

headsize [ racquet head size | racquet size | size ]

wire screen maker

wet sieve test and dry sieve test

Zimmer rotary printing machine Peter Zimmer | Zimmer rotary printing machine

3.3. Mechanical sieve shaker (if available) capable of imparting both vertical and horizontal motion to the test sample.

3.3. Mechanical sieve shaker (if available) capable of imparting both vertical and horizontal motion to the test sample.

3.3. Mechanical sieve shaker (if available) capable of imparting both vertical and horizontal motion to the test sample.

Sieving consists of taking hold of the set of sieves with the hand and shaking it, more or less horizontally, 120 times per minute, each shake travelling about 70 mm. This to-and-fro movement is interrupted every minute by a triple circular movement.