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Keuffel and Esser Mannheim with glass cursor 4041 10" polyphase duplex Linear slide rule
IN-1553
Keuffel & Esser Co.
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Concise circular 2 1/2"
IN-1555
Sama and Etani
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Concise CTCS-552 circular 2 1/2"s slide rule with conversion tables
IN-1556
Sama and Etani
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Midget Slide Rule - circular 4 1/4"
IN-1558
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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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linear 369 6" mannheim slide rule
IN-1560
Faber Castell
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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 Log Log Duplex Decitrig 4081-3 10" Linear slide rule
IN-1658
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 Decitrig 4081-3 10" Linear slide rule
IN-1663
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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Raydist em calculator
IN-1726
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line of sight indicator
IN-1728
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Keuffel and Esser Fuller spiral slide rule
IN-1911
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Vector 4093-3 10" Linear slide rule
IN-1964
Keuffel & Esser Co.
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Slide Rule - linear 2 5/8"
IN-1968
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linear 6 1/2" mannheim slide rule
IN-1969
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Keuffel and Esser Log Log Duplex Decitrig 4081-3 10" Linear slide rule
IN-1971
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig 4081-3 10" Linear slide rule
IN-2100
Keuffel & Esser Co.
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linear 6"Sterling 587 polyphase slide rule
IN-2941
Sterling
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Keuffel and Esser Polyphase Mannheim 4053-3 10" Linear slide rule
stray114616
Keuffel & Esser Co.
circa 1917
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