Vintage K&E Paragon Ruling Pen Drafting Drawing tool

Vintage K & E / Keuffel & Esser Ruling Pen ~ Germany Paragon 6”

Vintage Ruling Pen Precision Drawstring Instruments

Vintage Antique Quill Mechanical Drafting/Drawing Ruling Pen Instrument Set

Vintage Drafting Ruling Pen Adjustable Ink Line Drawing Tool 5.5”

Alvin Co Germany Ruling Pen #757 Drafting Drawing instrument tool

Vintage Drafting Kit German made, No. 1725

Vintage Drafting Set Compass Kit Technical Supply Co Scranton PA