Product description Perfect Protractor And Compass Set Suitable For Students,Enginees,Designers,Artists And Others，Ensure Accurate And Professional Drawings, Standard Size Compass Size: 6.2" A circle With A Maximum Radius Of 4.1" Lead Core Size: 1" Pencil Sharpener Size:1.4" Accessory Box Size:1.8" Protractor Size:6" Perfect Protractor And Compass Set 1 Professional Compasses 1 Protractor 2 Extra Pencil Lead 1 Pencil Sharpener 1 Set multi functional universal adapter Practical Measuring And Drawing Tools. Suitable For Students,Engineer,Designers,Artists And Others. Thoughtful Design Geometry compass has bow head design and grooved knob for Comfortable grip. Easy Adjustment Geometry compass easy to control the size of the circle, when your rotate the center wheel,it locks and does not slide when draw. Screws design Drawing compass lead tips steel needle sit in a milled groove tightened by screw and thumb nut. Stable drawing After Tighten The Steel Needle With Screws Geometry Compass Stable When Drafting. Package Inclusion: 1 compasses, 1 bottles spare steel needle tips and Screw Replacements, 1 bottles Pencil Leads, 1 Protractor, 1 leads sharpener, sufficient quantity and replacement device Accurate Drawing: Our professional precision compass with spring bow head and center wheel avoids unintentional leg movements High Quality Compass: Quality Stainless Steel Material, which has good toughness and high hardness, so it is strong, durable for long-term use and not easy to rust 6 Inch protractor: Made with transparent clear plastic, Range of 0 to 180 degrees, With the suitable size and light weight, easily grip and use Multiple Uses: Good for School Supplies, Office Supplies, Geometry, Math, Drafting, Drawing, Measuring, art and carpentry