Helix Quick-Release Precision Compass

Thumbwheel Control and Quick Release for Technical Drawing

The Helix 0352520 Quick-Release Precision Compass is listed by ACCO with a thumbwheel, a quick-release mechanism for fast adjustment, a geared head and double-knee joints.

ACCO pitches it at students and professionals doing detailed drawing work, and lists 2 replacement leads plus additional screws and nuts with it, along with a compass height of 160mm. ACCO’s pack photo shows a clear hard case with a grey insert and a Quick Release Technical Compass sleeve, with blue fittings on the compass.

As ACCO lists it, the thumbwheel lets you move the radius out in small steps, while the quick release opens the legs fast when you jump to a much larger circle. ACCO recommends the double-knee joints for small circles, where bending both legs keeps the point and lead upright.

See our geometry compasses and drawing supplies, add templates and set squares from geometry and technical drawing, or look through the Helix range for circle and ellipse templates.