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$650

Vintage Cylindrical Slide Rule – Thacher Style Math Calculator in Wood Box – Engineering Instrument – Rare!

Posted 6 months ago in Mesquite, TX

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Marvel Trigg

Marvel Trigg

Joined Jan 2024

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Vintage Cylindrical Slide Rule – Thacher Style Math Calculator in Wood Box – Engineering Instrument – Rare!

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Description

🧮 Vintage Cylindrical Slide Rule / Math Calculator – Rare Engineering Instrument Beautiful vintage cylindrical slide rule (manual math calculator) — used by engineers, scientists, and mathematicians before the age of computers. This unique mechanical “math machine” is housed in a wooden storage box and features rotating scales for precision calculations such as multiplication, division, trigonometry, and logarithms. ✅ Rare collector’s item – often called a “cylindrical slide rule” or “Thacher-style calculator” ✅ Great condition for its age – scales and dials move freely ✅ Perfect for display, vintage décor, or as a teaching piece for math history buffs ✅ Box and mechanism both included Condition: vintage; minor cosmetic wear consistent with age. Mechanism intact and functional. Dimensions: approx. [add your measurements if you can] Era: estimated 1940s–1960s This is a museum-quality engineering relic — perfect for collectors of vintage calculators, drafting instruments, or antique science tools.

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Condition

Used (normal wear)

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