Scientific Ruler
Vintage Folding Hinged Ruler No 68 Upson Nut Co. Wooden
Mathematical Tool
Vintage Pickett P-232 A Architect Scale Drafting Triangular Ruler Japan. No box. In nice overall condition. There is some old tape residue and some
Vintage Pickett P-232 A Architect Scale Drafting Triangular Ruler Japan (AP)
Vintage U.S.ST'D Wood Triangle Scale Architect Ruler Germany & Other Lot Of 3
Triangular Ruler In Collectible Drafting Tools for sale
Mathematics Card
Hayden and Co No 1974 Vintage 12 Ruler Vintage Ruler - Denmark
3 Sided Ruler
Geek Maths Card
Vintage Math Tool
3 Side Ruler - Canada
Architect Ruler In Collectible Drafting Tools for sale