Isomars Semi Circular Protractor Transparent 180 degree 16cm protractor Categories: Templates, Drafting Share This Email Products in this RangeSM05Isomars Semi Circular Protractor Explore more products Read more Isomars Adjustable Set Squares Read more Isomars Drawing Tables A1 – Scholar Read more Isomars Erasing Shield Read more Isomars Circle Templates Read more Isomars Mini Drafter