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A complete Fuller’s Spiral Slide Rule (Model No. 1) manufactured in England by W.F. Stanley & Co. Ltd. (Serial Number 11471 / 54).Invented by Professor George Fuller, this iconic 19th/20th-century calculating instrument features a 42-foot logarithmic scale wrapped around a cylinder, providing incredible accuracy for complex mathematical, engineering, and architectural calculations.Includes:
Fuller’s Spiral Slide Rule / Calculator with Bakelite end-caps and handle Solid Brass Pointer / Index Arm (stamped FULLER CALCULATOR / MADE IN ENGLAND)Original Solid Brass Support / Mounting Arm (for vertical box mounting) Original Fitted Presentation / Carrying CaseOriginal Printed Instruction Booklet (\"The Fuller Calculator\")Condition:
Slide Rule / Cylinder: very good vintage condition. The paper-wrapped logarithmic grid is clean, crisp, and fully legible with light, uniform age toning. Bakelite components and main body show no chips or cracks. Brass Components: Clear stamped markings with an attractive, unpolished vintage patina. Case: Sturdy wooden box with original felt lining, brass hinges, and side latches. Shows minor cosmetic handling marks/scratches consistent with age.Note on Rear Hinge: One knuckle on the rear brass hinge has a minor offset split/alignment
flaw. (See close-up photo).Specifications
Maker: W.F. Stanley & Co. Ltd., London
Model: Fuller Calculator (Model 1)
Serial Number: 11471 / 54
Origin: Made in England
Era: Circa 1950sCase Dimensions: Approx. 46cm long x 12cm wide & 11cm high.
