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Keuffel and Esser No. 7279 Linear slide rule
2004.010.0699
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0705
Keuffel & Esser Co.
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Keuffel and Esser Polyphase Mannheim 9050-1 5" Linear slide rule
2004.010.0708
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0714
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0715
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig 4080-3 10" Linear slide rule
2004.010.0716
Keuffel & Esser Co.
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Keuffel and Esser Mannheim "POWER TRIG" Slide Rule 4110 13" Linear slide rule
2004.010.0718
Keuffel & Esser Co.
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Keuffel and Esser Mannheim Beginner's Slide Rule N4058W 10" Linear slide rule
2004.010.0719
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig 4081-3 10" Linear slide rule
2004.010.0720
Keuffel & Esser Co.
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Keuffel and Esser Mannheim "POWER TRIG" Slide Rule 4110 13" Linear slide rule
2004.010.0726
Keuffel & Esser Co.
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Keuffel and Esser D36 Linear slide rule
2004.010.0729
Keuffel & Esser Co.
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Keuffel and Esser C419 Linear slide Rule
2004.010.0730
Keuffel & Esser Co.
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Keuffel and Esser C423 Linear slide rule
2004.010.0731
Keuffel & Esser Co.
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Keuffel and Esser C420 Linear slide rule
2004.010.0733
Keuffel & Esser Co.
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Keuffel and Esser "Challenge" N9725 1/2 drafting set
2004.010.0744
Keuffel & Esser Co.
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Keuffel and Esser Pounce for Tracing Cloth
2004.010.0746
Keuffel & Esser Co.
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Keuffel and Esser Universal Duplex Slide Rule "prototype" 4090 10" Linear slide rule
2005.013.001
Keuffel & Esser Co.
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Keuffel and Esser Braille slide rule
2006.011.001
Keuffel & Esser Co.
1952-1955
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Keuffel and Esser Log Log Duplex Decitrig 4053-3 10" Linear slide rule
2008.007.002
Keuffel & Esser Co.
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Keuffel and Esser Polyphase Duplex with clam shell cursor 4083 16" Linear slide rule
2008.010.001
Keuffel & Esser Co.
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Keuffel and Esser Doric Lettering Set 61 3135
2008.022.002
Keuffel & Esser Co.
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Keuffel and Esser Thacher's Calculating Machine Type II 4012 cylindrical
2009.034.001
Keuffel & Esser Co.
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Keuffel & Esser 68 1944 polyphase classroom demonstration linear slide rule
2013.013.002
Keuffel & Esser Co.
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Keuffel & Esser Deci-lon classroom demonstration slide rule
2013.013.004
Keuffel & Esser Co.
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Classroom demonstration slide rule
2013.013.014
Keuffel & Esser Co.
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Keuffel and Esser 101 classroom demonstration linear slide rule
2013.013.015
Keuffel & Esser Co.
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Keuffel & Esser Deci-Lon 5 pocket slide rule
2013.013.031
Keuffel & Esser Co.
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Keuffel & Esser 4088-3 linear slide rule
2013.013.034
Keuffel & Esser Co.
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Keuffel & Esser 4080-3 linear slide rule
2013.013.066
Keuffel & Esser Co.
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Keuffel & Esser Deci-Lon 5-inch linear slide rule
2013.013.087
Keuffel & Esser Co.
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Keuffel & Esser Overhead Projection Deci-lon 68 1955 slide rule
2013.013.093
Keuffel & Esser Co.
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Keuffel and Esser Thacher's Calculating Machine Type II 4012 cylindrical
IN-1081
Keuffel & Esser Co.
1886
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Keuffel and Esser Log Log Duplex 4092-3 10" Linear slide rule
IN-1154
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig N4081-3 10" Linear slide rule
IN-1190
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig linear 10" slide rule
IN-1286
Keuffel & Esser Co.
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Keuffel and Esser Mannheim Merchant's Slide Rule 4150-1 5" Linear slide rule
IN-1539
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Vector 4093-3 10" Linear slide rule
IN-1542
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Vector 4083-5 20" Linear slide rule
IN-1543
Keuffel & Esser Co.
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Keuffel and Esser Polyphase Duplex 4088-3 10" Linear slide rule
IN-1550
Keuffel & Esser Co.
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Keuffel and Esser Polyphase Duplex 4088-2 8" Linear slide rule
IN-1552
Keuffel & Esser Co.
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Keuffel and Esser Mannheim Merchant's Slide Rule 4150-1 5" Linear slide rule
IN-1559
Keuffel & Esser Co.
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Keuffel and Esser linear 7" slide rule
IN-1563
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig 4081-3 10" Linear slide rule
IN-1569
Keuffel & Esser Co.
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Keuffel and Esser Polyphase Duplex 4088-3 10" Linear slide rule
IN-1578
Keuffel & Esser Co.
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Keuffel and Esser Mannheim "Pocket" Slide rule 4098A 5" Linear slide rule
IN-1659
Keuffel & Esser Co.
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Keuffel and Esser Polyphase Duplex 4088-3 10" Linear slide rule
IN-1660
Keuffel & Esser Co.
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Keuffel and Esser Polyphase Mannheim N4053-3 10" Linear slide rule
IN-1662
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Vector 4083-3 10" Linear slide rule
IN-1696
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig N4081-3 10" Linear slide rule
IN-1719
Keuffel & Esser Co.
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Keuffel and Esser Fuller spiral slide rule
IN-1911
Keuffel & Esser Co.
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