Lot · Slide Rules
Vintage 1979 Metric Converter Slide Rule Chart Learning Research Inc. Woodbury
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Mon · Jul 20, 2026
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Used
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ZIP 900**
owlridge
363 ratings · 100.00% positive
Description
From the sellerVintage metric converter slide chart from Learning Research Inc., Woodbury, NY (©1979). • Sliding cardboard chart with windows to convert length, volume, area, and mass between U.S. standard and metric units. • Includes fractional equivalents, U.S. standard measures, and SI prefixes. • Approx. 8.5” x 4.5”. • Good vintage condition with some age-related wear and light discoloration (see photos). • Great collectible for teachers, engineers, metric conversion buffs, or vintage school supply collectors.
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