A drafting compass is a technical drawing instrument that can be used to draw circles and arcs or simply to mark distances, for example on a map/
A ruler is a straightedge for drawing straight lines and for measuring distances.
A stencil is a thin sheet of material from which holes have been cut to create a shape. Stencils act as templates allowing an image or symbol to be reproduced. Historically, stencilling pre-dates printing and the earliest examples are found in Palaeolithic cave paintings.
A protractor is a tool for measuring angles and can be used to plot drafts. Crystal clear, plastic protractors have a centring point, bevelled edges and a contracy scale.
Set squares are drafting tools which provide a straightedge at a right angle to the baseline.