Unknown / Generic Draftsman's Tool
Ruling Pen with Bone or Plastic Handle
Ruling Pen
Filling System
Manual Dip / Eyedropper Applied
Condition
Fair to Good, showing signs of age, discoloration, and minor tarnish on the metal parts
Estimated Value
$10 - $25
Era
Mid-20th Century (Vintage)
Pen Specifications
Pen Type
Ruling Pen
Filling System
Manual Dip / Eyedropper Applied
Body Material
Bone / Celluloid / Plastic
Trim Material
Steel / Nickel-plated
Color / Pattern
Off-white / Cream handle with silver metal nib
Cap Type
None
Clip Design
None
Barrel Shape
Straight cylindrical with a bulbous terminal end
Nib Details
Nib Material
Steel
Nib Size
Adjustable (via screw mechanism)
Nib Type
Ruling Nib / Line-drawing pen
Nib Condition
Tarnish and minor wear present; adjustable screw appears intact
Dimensions
Size / Dimensions
Approximately 15 cm long, thin diameter
Weight Estimate
Lightweight, under 15 grams
Heritage & Origin
Era / Period
Mid-20th Century (Vintage)
Country of Origin
Unknown (Likely Europe or USA)
Rarity
Common
Condition & Value
Overall Condition
Fair to Good, showing signs of age, discoloration, and minor tarnish on the metal parts
Filling System Condition
N/A (Manual dipping tool)
Estimated Value
$10 - $25
Special Features
Adjustable gap width screw for varying line thicknesses in technical drawing or calligraphy
Ink Recommendations
India ink, drafting ink, or calligraphy ink
Care Recommendations
Clean thoroughly with water or pen flush immediately after use to prevent ink from drying between the blades; dry completely to prevent rust
Interesting Facts
Ruling pens were primarily used by architects, cartographers, and engineers for precise ink lines before the invention of technical pens like Rapidographs
Overall Assessment
A charming and functional vintage drafting tool, perfect for decorative calligraphy borders or historical collections