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.
I have used Helix products for many years in my hobby of scratchbuilding waterline models of HM capital ships of WWI at 1:192 (1/16th inch to 1 foot). In my obsession for fine detail and accuracy in repeat parts, the thumbwheel compass rigidly maintains the exact radius for however long I wish it to do so. Ordinary pull-apart compasses are too 'flexible' and frequently loosen, then open slightly during use, giving rise to unequal repeat radii. I also use Helix's Giant Bow Compass for larger circles. I'm impressed enough with Helix compasses that I have purchased the same ones for my grandson, for use in both school mathematics and his hobby of scratchbuilding RC cars.