The Plastic Used in Ruler Protractor and Square are Made of High Transparency Plastic and Comes with Precise Marking for Easy Reading and Accurate Drawing Both Divider and Compass are Made with Non Rusting Strong Material to Last Long and Remain in Shape and Shine Every Instrument is Designed and Developed by us with all Safety Measues for Its Used Doms Mathematical instrument Box in Your Hand is a Result of Our excellent Craftmenship