Elements of lettering ... A treatise on the history, classification, and practical application of the various styles of letters of the alphabet (1899)
International Correspondence Schools · Scranton, The Colliery engineer company · leaf 78
Fig. 95. Fig. 96. angles of 45° each, and Fig. 96 one of 60° and one of 30°.They are called Jf5° and 60° triangles, respectively. To draw avertical line, place the T square in position to draw a horizontalline, and lay the triangle against it, so as to form a right angle. ELEMENTS OF LETTERING. 65…
Lettering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Divina proportione : opera a tutti glingegni perspicaci e curiosi necessaria oue ciascun studioso di philosophia: prospettiua pictura sculptura: architectura: musica: e altre mathematice: suavissima: sotile: e admirabile doctrina consequira: e delecterassi: co[n] varie questione de secretissima scientia (1509)](https://img.insideoutlibrary.com/img/200/ia-divinaproportion00paci-302-464.webp)
