Model of a Filtering Machine; Model of filtering machine for purifying drinking water; painted brown. It is a flat; square container that stands on a narrow side. A piping system has been installed inside: a thick pipe with a narrow branch runs diagonally from top to bottom; where a narrow horizontal pipe connects to it; which has an outlet in the side; on the other hand; a narrow vertical pipe with an open end runs from slightly above the bottom to the top; where there is a drain pipe in the side and above that a small compartment into which the pipe comes out and is finished with a basket.; anonymous; Netherlands (possibly); 1800 - 1858; brass (alloy); h 10.9 cm x w 12.3 cm x d 3.4 cm