UNIQUE UNIVERSAL 1 Slide Rule 30cm With Box

Vintage 6" FABER CASTELL 67/87 slide rule

Faber Castell Ruler No 57/87 Vintage School Slide Rule for Draughing Drawing

Faber Castell TR3 Calculator with Faber Castell TRL charger

Vintage Staedtler MARS Drawing Drafting Compass Set

Victorian brass & rosewood parallel ruler lot 1

Vintage Rulers | Faber-Castell 1/92 | Linex 308 | Blundell Harling | Rolling

Vintage Staedtler Mars 544A Slide Rule with Case