as paper weight
This diabolo is a nicely shaped letter scale. The scale is strongly related to the Scale Queen. The diabolo design was protected with an American Design patent with the number D193,682. It has the date September 25 1962. It was granted to the firm Arthur Salm Inc. Chicago, Illinois, U.S.A. The base part is made of real wood. The scale has a capacity of eight ounces. The chart is subdivided into half ounces. The chart on the aluminum shaft is very difficult to read. Below some more pictures of this diabolo letter scale.
as a letter scale
