Embossing Company Vintage Color Cubes Large Set, c 1930s antique marbles The top opens easily and

The top opens easily and makes for easy grabbing of whatever is housed inside

I’ve since learned that a hydrometer is used for measuring the relative density of liquids based on buoyancy: you pour liquid into a container

I believe it was created by Thomas Field Mostrom (1959-2005)

Image size: 8 1/4" x 7 1/2"

woman: 3" across x 1/2" tall (with flat footed bottom

Embossing Company Vintage Color Cubes Large Set, c 1930s antique marbles The top opens easily andI believe this is the largest set of Color Cubes the Embossing Company, Albany, NY made endless possibilities! These were made as teaching toys, intended to "teach designing, initiative, colors, concentration, symmetry, observation and patience, but have certainly become as popular among adults as children, and iconic design objects. Really fabulous to keep on the table for infinite hours of creative diversion. The complete set of 49 blocks are in