Staedtler Masterbow Comfort Student Compass for Circles to 10.25 Inch Diameter, Lead and Pouch (551-40-WP)
All-metal spring-bow compass feature a center wheel that delivers precision setting and prevents unintended setting adjustments. Maximum circle diameter is 10-3/8'' (265mm). Design features interchangeable lead part and a nickel finish to resist rust and stains. Compass includes a spare lead tube and comes in a plastic wallet.