High quality: The professional compasses are made by aluminum and stainless steel. Note:The cheap plastic compass fail to meet base technical requirements the precision compasses should be provided with tracing function. durable and easy carry
Package includes: 1 x shatterproof plastic box; 3 graphic compass; 2 x Conversion head; 1 x pencil refill; 1 x Pencil for Compass, 1 x pencil sharpener; geometry compass set is suitable for architects, engineers, draftsmen, builders, roofers, teachers and students, etc
Extension Beam Design: An Extension Beam attaches to the big Compass for drawing large circles. You can draw larger circle without lots of measuring and connect dots. Interchangeable attachments, a slip handle for pens, pencils, stylus or markers.
Wide use: The drafting set is a fantastic assistant for those working in machine design, building construction, and drafting for various industries. This tool is perfect for DIY handymen and artists for a variety of geometry tasks