Name/Title
Fan-type pocket reduction-scale ruler, Faber-Castell 20/83Entry/Object ID
2025.16.4Description
A folding "fan" scale rule: five flat steel scale blades riveted at one end into a green leather case/holder, fanning open like blades of a pocketknife. Each blade is printed in black on a light (white/silvered) ground with paired reduction scales and fine graduations; visible ratios across the blades include 1:20, 1:25, 1:30, 1:33⅓, 1:50, 1:100, 1:110, 1:115, 1:125, 1:130, 1:140, 1:150, and 1:175. The uppermost blade is marked "Faber-Castell 20-83 W.Germany." Closed, the blades nest within the green leather sheath, which has a thumb-notch and a riveted pivot at the head.Collection
Evelyn Sosa collectionAcquisition
Accession
2025.16Source or Donor
Evelyn SosaAcquisition Method
GiftMade/Created
Manufacturer
A.W. Faber-CastellPlace
Country
F.R.G.Region
Central EuropeContinent
EuropeEdition
Model 20/83Notes
Date: West German era — manufactured 1949–1990 per the "W. Germany" mark (pre-reunification). Circa 1960s–1980s (tentative).
Place of Origin: West Germany (Faber-Castell); imported to and used in Cuba.Inscription/Signature/Marks
Notes
"Faber-Castell 20-83 W.Germany" on a blade; printed reduction-scale ratios and graduations on each blade (range 1:20 to 1:175).Materials
Material Notes
Materials: Coated/printed steel scale blades; green leather (or leatherette) case; metal pivot rivet.
Technique: Precision-printed/engraved steel scales; stitched leather case; riveted fan pivot allowing the blades to swing out individually.Relationships
Related Places
Place
Country
F.R.G.Region
Central EuropeContinent
EuropeNotes
productionPlace
City
HavanaCountry
CubaRegion
Caribbean, Central AmericaNotes
useCreated By
María A. Cabrera ArúsCreate Date
October 20, 2025Updated By
María A. Cabrera ArúsUpdate Date
June 14, 2026