plansifter
/ˈplansɪftə/noun
A machine consisting of a mechanically agitated set of superimposed flat sieves of differing mesh, used in flour milling for separating and grading grain.
Origin
Early 20th century; earliest use found in The Official Gazette. Alteration of German Plansichter (from plan flat, level + Sichter (now obsolete or regional) from sichten + -er), after sifter.