The heavy-duty instruments in the 7-Piece Caliper and Compass Set by Kings County Tools bear little resemblance to the math compass for geometry class you used in school. These rugged industrial-grade workshop instruments offer precise results and sleek style, with black metal and brass accents. This compass tool set is milled from solid steel, with brass fittings, heavy-duty fitted hinges, and knurled locking nuts. The drafting compass professional set includes a round caliper, straight caliper, pencil compass, eraser, 2 pencils, and a brass pencil sharpener, all fitted in a wooden carry case for easy storage or transportation to the jobsite. This is the perfect set of geometry tools for serious architects, draftsmen, engineers, and woodworkers who love minimalist design and simple functionality.