Drawing aid

摘要

The drawing aid consists of several templates (10,12), which may be placed above each other. Facing surfaces of the templates have interlocking lock elements (24,28,30,32). These retain the templates within a set pattern in several positions formed by turning or parallel movements. At least one of the templates has a drawing contour (14), forming a straight ruler (18). The locking elements are formed by ribbing extending parallel to the ruler. One of the templates forms two rulers (18,20) at right angles to each other.