Available in inches for accurate diameter circles (0” to 8”). Innovative three-disk design holds pencil and stylus in place for smooth adjustments. Can be hooked in tandem for larger circles and can be used with any marking device-pencils, markers, scribers, or X-acto knives. Nut is quality aluminum construction and will not wear out .
WARNING: CHOKING HAZARD - Small parts.
Not for children under 3 yrs.
WARNING: CHOKING HAZARD