Mars Masterbow Compass
https://theclassroomstore.com/products/mars-masterbow-compass
All metal compass with spare lead vial. Large center wheel to micro-set the compass to draw the smallest radii.
Price
Qty
10246 - Each
28.05
ea
All metal spring-bow compass features a center wheel that delivers precision setting and prevents unintended setting adjustments. Maximum circle diameter is 10 3/8". 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.