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TitleMakerDate Made
Keuffel and Esser Mannheim "POWER TRIG" Slide Rule 4110 13" Linear slide rule2004.010.0726Keuffel & Esser Co.View
Keuffel and Esser "Challenge" N9725 1/2 drafting set2004.010.0744Keuffel & Esser Co.View
tracing divider2004.010.0745View
Keuffel and Esser Pounce for Tracing Cloth2004.010.0746Keuffel & Esser Co.View
Woollams-Seeney Artillery slide rule2004.010.0749E. J. Woollams-Seeney1918View
Keuffel and Esser Universal Duplex Slide Rule "prototype" 4090 10" Linear slide rule2005.013.001Keuffel & Esser Co.View
Keuffel and Esser Polyphase Duplex with clam shell cursor 4083 16" Linear slide rule2008.010.001Keuffel & Esser Co.View
Tavernier-Gravet Mannheim linear 14" slide ruleIN-0977Tavernier-Gravet1889View
Keuffel and Esser Mannheim Merchant's Slide Rule 4150-1 5" Linear slide ruleIN-1539Keuffel & Esser Co.View
Keuffel and Esser Log Log Duplex Decitrig 4081-3 10" Linear slide ruleIN-1569Keuffel & Esser Co.View
Keuffel and Esser Fuller spiral slide ruleIN-1911Keuffel & Esser Co.View

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