Page:Standard lettering (IA standardletterin01claf).pdf/27



The unit of measure for the lower case letters is one-tenth (1/10) of the height of the " full height " letters, that is the b, d, l, etc. The height of the short letters, the i, (excluding the dot), the v, z, etc., is three-fifths the height of the l, that is 6/10 or 6 units. The thickness of the 1, i, and all straight heavy strokes is one-tenth the height of the 1, or one unit. The other principles set forth in the study of the Capital letters apply here.

For instance, all curved portions touching the guide lines extend an eighth (⅛) unit beyond. The regular curved heavy strokes are 1⅛ units thick. The grace curves on the heavy strokes are ½ U radius, and on the light strokes are one unit radius, etc. The similar letters of both alphabets are made according to the same methods, as in the S, W, X, etc.

The numerals for this style are the same as those of the Roman Vertical Capitals.