Abstract: The invention discloses an apparatus for measuring the diffusion of liquid into solids comprising(a) an upper portion having substantially sloped walls, the lower end of said sloped walls meeting to form an aperture,(b) solids retaining means positioned at said aperture, said means being permeable to a liquid whose absorption is being measured,(c) a lower portion substantially cylindrical in configuration, said lower portion connected with said upper portion wherein said aperture is common to both, and wherein(d) both upper and lower portions are operably connected to a gravimetric scale, such that the total weight of the upper and lower portions, solids retaining means, solid content, and liquid can be weighed.The apparatus and method taught provide an efficient easy way for measuring fusion of liquid in the solids.

Abstract: The weight of aggregate for preparing concrete and mortar is measured while the aggregate is immersed in water contained in a container. The water in the container is discharged and the water in the interstice in the aggregate is also removed. Thereafter the weight of the aggregate is measured again. These measured values of the aggregate are used to determine the quantity of water to be added to the aggregate when it is used to prepare concrete or mortar.

Abstract: A powder moisture meter, comprising an open-mouthed container comprising first and second transparent wall portions, said second wall portion being disposed between said first wall portion and the container mouth, first graduated scale means at said first wall portion for calibrating said meter, second graduated scale means at said second wall portion for directly determining the moisture content of said powder.