concav scale
This letter scale with concav chart of Ph. J. Maul has a frame base made of simple bent steel strip, see right photo. The range of the letter scale shown is 0 - 500 grams. The letter scale is made of steel and tin, except the aluminum bowl. On this letter scale no M -of Maul- logo can be found. Still the concav logo makes clear: this is a letter scale by Ph.J. Maul.
frame of thick steel strip
