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32. Arnout Visser, born 1962
"Archimedes" Letter Scale, 1993 (1991)
Pyrex glass
Droog Design collection, manufactured by DMD, Voorburg
Lent by DMD
8 x diam. 2" (20 x diam. 5 cm)
Photo by Hans van der Mars, courtesy DMD

The letter scale uses Archimedes's principle to weigh letters. A graduated cylinder of pyrex glass is floating in liquid. The weight of the letter pushes down the upper cylinder, thus causing the liquid to rise in between the two cylinders. The movement is thus measured and transferred into weight units.