T-Square and Drawing Board
Wood triangle and Ebony Parallel Rule
Hardwood Triangles
Harling Rolling Ruler
Harling Rolling Ruler & Protractor
Keuffel & Esser Rolling Ruler
Rolling Parallel Rulers Family
Rolling Rulers
Hardwood Triangles
Paraline Drafting Instrument
Dietzgen Parallel Rules
Sigsbee's Patent Parallel Rule
para rule-01.JPG
Triangle bob.jpg
Catalog page: Dietzgen Draft-Scale-Angle
Dietzgen Draft-Scale-Angle
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