This Helix T79012 Precision Thumbwheel Compass is a reliable tool for any office or school setting. With its precise measurements, it is perfect for creating perfect shapes and sizes for your writing needs. The brand Helix is known for its quality products, and this thumbwheel compass is no exception. The compass is easy to use and provides a smooth and accurate drawing experience. It is ideal for use with a variety of writing instruments, including pens, pencils, and markers. Whether you need to create professional-quality graphics or just need a reliable compass for your everyday writing needs, the Helix T79012 Precision Thumbwheel Compass is an excellent choice.