Staedtler 6” Adjustable Triangle With Slope & RIse Mars 964 51-6 Vintage Staedtler Adjustable Triangle Vintage 6” Triangle with Slope and Rise Mars 964 51-6 Made in the USA Brand New with box and instructions included Fast Handling Seller Notes : Black (SAT - 001) #staedtler #architect #art #schoolsupplies #triangle