2 Pack Elaboration Compass With Lock Math Bow Compass Compass Metal Figure Compass With Wheel Geometry Compass Bow Divider Precision StudeAll Metallic Material: Heavy Fine Compass Provides Lasting SatisfactionEasy Control: Holds Tight And Locks With This Adjustable WheelUser-Friendly: No More Slipping From Your Fingers, With This Precision Geometry Compass, You Can Create Perfect Wheels. Maximum Diameter: Makes circles up to 10 inches in diameterFree Bonus: Compass*2, Extra Wires*6, Nuts*4, Screws*4, Reusable Case*2Compass Development. A small compass bow with a precise center wheel allows for extremely thin settings. The student compass comes with a micro-set of center wheel leg adjustments for added convenience. Color: BlueMaterial: Metal Plotting Type: Student CompassDrawing Lead Can Be Sharpened/ReplacedThe Center of the Wheel Allows for Ultra-Thin SettingsMicro-Set of Center Wheel Leg AdjustmentsInclude Interchangeable GuidesEasy-to-Use DesignEasy-to-Use CompassThe arc compass prevents leg movement when drawing. Each child can change the radius of the wheel without any effort and always lock in position to get the desired wheels. Drawing CompassA must-have item for school suppliesThis is an amazing math classroom assistant for kids. It can easily draw small circles without shaking. Kids will have fun making circles without ever getting upset. Prepare your kids for any class! Compass with lock