Four-piece set contains the most popular mathematical instruments: 12" ruler, 180° protractor, 60° set square and 45° set square. Tinted plastic provides excellent visibility and is ideal for students of higher math, drafting and engineering....
Four-piece set contains the most popular mathematical instruments: 12" ruler, 180° protractor, 60° set square and 45° set square. Tinted plastic provides excellent visibility and is ideal for students of higher math, drafting and engineering....