letter scale, design: Arnout Visser
The Dutchman Arnout Visser has designed this beautiful Archimedes letter scale in 1991 or 1993, the sources are not unanimous about this. The letter scale consists of two parts made of Pyrex glass. The foot is filled with water up to the three small indentations. Then place the floater in the foot. This floater will sink to the value zero into the water. The letter scale is now ready for use. The water can, if desired, be colored with ecoline or ink. It is especially beautiful design, and as often in design, less suitable for practical use. On the floater are lines for the postal rate limits 20, 50 and 100 grams. This lines of measure are however 2 millimeters wide, the reading of, for example, a value of 20 grams is that ar the lower edge of the stripe, or at the upper edge, or somewhere in between? The accuracy of weighing is not good. A letter of slightly more than 100 grams will result in water flowing over the top edge. Tap water evaporates and leaves lime marks on both parts Pyrex. The two parts are 19 centimeters high, the base diameter is 82 millimeters, the top surface is 72 mm round. The outer diameter of the cylindrical part of the foot is 52 mm, the outer diameter of the float is 42 mm. The water-filled letter scale is at rest 24 cm high. Previously a letter scale with the same principle was shown, see the letter scale of Dr. Haag Design.
Below are some more images of the good looking Archimedes letter scale of Arnout Visser.
the images of the leaflet
