The Staedtler Mars Comfort 551 Precision Compass is a
Adjust the leg position and set it firmly in place using the center wheel, which is large and easy to turn. Comfort and smoothness are enhanced by the
The Comfort 551 measures 6" long and produces circles up to 10¼" in diameter.
If you'd like to replace the lead with a technical pen, pencil, or art knife, a universal adapter is included that accommodates most drafting instruments.
® Staedtler is a registered trademark. ® Mars is a registered trademark.