Toolmaker’s “Yankee″Quick-spring Nut, Rapid Adjust, Spring Dividers Calipers Compass, 0-12.5″/ 317 Mm Range, Brass Fulcrum And Fine Adjustment Mechanism, Flat Leg, C7-12 Outlet

Features Brass Fulcrum And Adjustment Mechanism

Maximum Opening Is 12.5″ / 317 Mm

Made From High-grade Carbon Steel With Hardened And Finely Polished Points

Flat Leg Construction Makes Unit Very Durable; Has Substantially Hardened Spring

Features Quick-spring Nut For Rapid And Precise Fine Adjustment