Sign writing and glass embossing : a complete practical illustrated manual of the art, to which are added numerous alphabets (1890)
Callingham, James · Philadelphia : H. C. Baird & co. · leaf 126
tto two feet and three-quarters, without increasing theheight of the letters. The diagram (Fig. 38) is on ascale of one inch to the foot. The first thing is to drawthe line of expansion at any distance below the writingto be extended, and then draw a diagonal line from A tothe point b. Parallel… … The same problem may be used with equal facility forthe compression of the letters, the only difference beingin shortening the diagonal line. This line, as has beenalready intimated, may form any angle with the line ofwriting, and the result will be the same. Of course, inpractice, the dimensions…
Embossing (Printing) · Signs and signboards, Glass
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