Log Duplex Decitrig Slide Rule by Lyman Kells Phd (2 results)

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The Log Duplex Decitrig Slide Rule
Lyman M. Kells, Phd., And Others
Published by Keuffel & Esser Co., New York, NY, 1945
- Softcover
Seller: Prairie Creek Books LLC., Torrington, WY, U.S.A.Prairie Creek Books LLC.
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Condition: Used - Good
£ 6.85
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Soft cover. Condition: Good. No Jacket. Used. Original pale pink paper wraps, stapled, spine is slightly sunned and exterior shows evidence of slight finger soiling. 101 pages. The manual for the No. 4081 slide rule made by Keuffel & Esser. There is a thumb sized spot of damp-staining to the bottom edge of the pages.
The Log Log Duplex Decitrig Slide Rule No. 4081: A Manual
Lyman M. Kells, Ph.D., Willis F. Kern, & James R. Bland
Published by Keuffel & Esser Co., 1943
- Softcover
Seller: DJ Smith Books, Carmichael, CA, U.S.A.DJ Smith Books
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Condition: Used - Good
£ 6.85
£ 4.43 shipping
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Soft cover. Condition: Good. No Jacket. Stapled binding is tight. Pages have no writing. Cover is a little beat up and has a few light stains. Some light soiling along edge of page block.