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Catalogue : mathematical and engineering instruments and materials manufactured and imported by James W. Queen & Co. (1880)
James W. Queen & Company · James W. Queen & Co. · leaf 72
A 737. A 737. (Win Silver Triangle, angles 45, 45, and. sides, 4 inches long, . u AA i3S-°s^ a sst* ^45; 45> ■-* ^r £ ,Tria^ ^les «- 4.3, and < -i, , Sldes> inches long, 90 degrees, * 00 degrees, • • 90 degrees, 90 degrees, 90 degrees, 90 degrees,• • . 90 degrees, isosceles • • isosceles •… … JEngineering instruments · Mathematical instruments
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