Two Vintage K & E / Keuffel & Esser Ruling Pen ~ Germany Paragon 6” & 4.5”

Vintage Antique Quill Mechanical Drafting/Drawing Ruling Pen Instrument Set

Vintage Alvin Drafting Set Charvos USA Compass Ruling Pen K&E Cloth Blue Case

Vintage Drafting Ruling Pen Adjustable Ink Line Drawing Tool 5.5”

Vintage Dietzgen Ruling Pen Drafting Tool 5” Made in Germany Engineer Art Draft

Keuffer & Esser Anvil Ruling Pen 5-1/2" K&E No. 924 VTG Drafting Engineering

Vtg Drafting Ruling Pen Wood Handle Mechanical Blueprint Drawing Ink Tool Box

Alvin Co Germany Spring Blade Ruling Pen #959 - Excellent Condition