 Keuffel Esser Ever Three Slide Rule No 4097D US $5.00 |
 VINTAGE K E Keuffel Esser 4053 3 SLIDE RULE w case US $8.99 |
 KEUFFEL AND ESSER SLIDE RULE 4181 3 W ORIGINAL CASE US $99.99
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 KEUFFEL AND ESSER SLIDE RULE W ORIGINAL CASE US $99.99
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 Vintage Keuffel Esser Engineering Slide Rule 4091 3 US $12.73 |
 Vintage Keuffel Esser Slide Rule w leather case US $3.00 |
 KEUFFEL ESSER Slide Rule PATENT 1915 830 US $5.95
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 Keuffel and Esser Beginners Slide RulePERFECT US $.99 |
 Mannheim Slide Rule Self Teaching Manual Keuffel Esser US $9.99 |
 Vintage Slide Rule Lot 2 Keuffel Esser 1 Roos US $9.99 |
 KEUFFEL ESSER CO NY 4088 2 10 SLIDE RULE WITH CASE US $38.99
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 Keuffel Esser KE Model 4181 1 5 Slide Rule w Case US $45.00
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