The ARISTO beam compass is available for drawing circles with a diameter of up to 1280 mm. The set includes two aluminum bars (330 mm each), two plastic guides with 3–3.5 mm insertion holes for a needle, pencil, or technical pen, one plastic connecting element, and interchangeable components (needle, pencil holder, technical pen). It features an adjustable gear mechanism for precise radius adjustment and quick modifications. Supplied in a plastic case. Materials: aluminum (bars) and plastic (guides, connector).