TRACE-LETTRES ET/OU TRACE-CHIFFRES AVEC EQUERRE INCORPOREE COULISSANTE

摘要

The stencil has letters (31) and numbers (32) and each of the letters is illustrated by an article (30) whose name starts with this letter. Above the numbers the same numbers of squares (33) are marked.S At one extremity there is a small graduated ruler (34) to help keep the stencil on parallel lines. There is a slide (35) which allows the stencil to be fixed on the edge of a support and the ruler can slide on this.