Fowler's Textile Calculator Type B
Description
Circular slide rule/calculator. Metal frame. Glass front, metal back. Marked: Fowler's Textile Calculator, Type B, Patent, Fowler & C., Manchester. Two turning knobs.
Brown leather case with top flap
Circular slide rule/calculator. Metal frame. Glass front, metal back. Marked: Fowler's Textile Calculator, Type B, Patent, Fowler & C., Manchester. Two turning knobs.
Brown leather case with top flap