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Concise 3" circular slide rule
1987.078.020
Concise
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circular 4" General Industrial Co.
1987.078.022
Perrygraf Corporation
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Perrygraf circular 2" ERICO
1987.078.023
Perrygraf Corporation
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Currency Conversion Slide Chart
1987.078.024
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Keuffel and Esser Log Log Duplex Decitrig 4081-3 10" Linear slide rule
1988.002.003
Keuffel & Esser Co.
unknown
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Keuffel and Esser Log Log Duplex 4092 10" Linear slide rule
1988.002.004
Keuffel & Esser Co.
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Albert Nestler No. 41 linear 4" slide rule
1989.027.001
Albert Nestler
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Albert Nestler No. 22 linear 6" slide rule
1989.027.002
Albert Nestler
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Keuffel and Esser Log Log Duplex Vector 4083-3 10" Linear slide rule
1989.027.003
Keuffel & Esser Co.
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Keuffel and Esser Polyphase Duplex 4088-3 10" Linear slide rule
1990.005.001
Keuffel & Esser Co.
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slide rule tie clip
1990.056.002
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Keuffel and Esser Log Log Duplex Vector 4083-3 10" Linear slide rule
1990.061.001
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig 4080-3 10" Linear slide rule
1990.061.002
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig 4081-5 20" Linear slide rule
1990.061.003
Keuffel & Esser Co.
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alternative artwork proposed for student center Giant Slide Rule
1991.060.006
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Dietzgen 5" linear slide rule
1992.052.001
E. Dietzgen Co.
circa 1920
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Dietzgen 10" linear slide rule
1992.052.003
E. Dietzgen Co.
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Keuffel and Esser 4035 8" linear slide rule
1992.052.004.1-.2
Keuffel & Esser Co.
c. 1910
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Keuffel and Esser Log Log Duplex Vector 4083-3 10" Linear slide rule
1993.012.002
Keuffel & Esser Co.
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Post-Hemmi 12"
1995.024.002
Post Slide Rule Company
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Keuffel and Esser Log Log Duplex 4092-3 10" Linear slide rule
1995.024.003
Keuffel & Esser Co.
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Keuffel and Esser Favorite Mannheim 4054 10" Linear slide rule
1995.054.001
Keuffel & Esser Co.
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Post Versalog 12"
1995.060.001
Post Slide Rule Company
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Keuffel and Esser Mannheim Student's Slide Rule 4058 10" Linear slide rule
1996.010.001
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig 4080-3 10" linear slide rule
1996.049.001
Keuffel & Esser Co.
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slide rule 10" wood Engineering Instruments Peru Indiana
1996.059.003
Engineering Instruments, Inc.
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Keuffel and Esser Log Log Duplex 4092-3 10" Linear slide rule
1997.023.001
Keuffel & Esser Co.
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slide rule tie clasp
2000.002.001
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Keuffel and Esser Polyphase Mannheim with fine divisions 4053-3F 10" Linear slide rule
2004.010.0001
Keuffel & Esser Co.
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Keuffel and Esser Mannheim 4056 10" Linear slide rule
2004.010.0002
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0003
Keuffel & Esser Co.
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Keuffel and Esser Mannheim with fine divisions 4041F 10" linear slide rule
2004.010.0004
Keuffel & Esser Co.
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Keuffel and Esser linear slide rule
2004.010.0005
Keuffel & Esser Co.
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Keuffel and Esser linear slide rule
2004.010.0006
Keuffel & Esser Co.
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Keuffel and Esser F806 Linear slide rule
2004.010.0007
Keuffel & Esser Co.
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Keuffel and Esser Mannheim Beginner's Slide Rule 4058C 10" Linear slide rule
2004.010.0008
Keuffel & Esser Co.
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Keuffel and Esser F808
2004.010.0009
Keuffel & Esser Co.
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Keuffel and Esser Mannheim Stadia Slide rule N4100 10" Linear slide rule
2004.010.0010
Keuffel & Esser Co.
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Keuffel and Esser Mannheim Beginner's Slide Rule N4058W 10" Linear slide rule
2004.010.0011
Keuffel & Esser Co.
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Keuffel and Esser Polyphase Mannheim 4053-3 10" Linear slide rule
2004.010.0012
Keuffel & Esser Co.
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Keuffel and Esser Mannheim Beginner's Slide Rule N4058W 10" Linear slide rule
2004.010.0013
Keuffel & Esser Co.
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Keuffel and Esser linear slide rule
2004.010.0014
Keuffel & Esser Co.
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Keuffel and Esser Mannheim Beginner's Slide Rule 4059 8" Linear slide rule
2004.010.0015
Keuffel & Esser Co.
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Keuffel and Esser Mannheim Beginner's Slide Rule 4059 8" Linear slide rule
2004.010.0016
Keuffel & Esser Co.
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Keuffel and Esser Polyphase Mannheim 4053-2 8" Linear slide rule
2004.010.0017
Keuffel & Esser Co.
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Keuffel and Esser Mannheim Beginner's Slide Rule 4059 8" Linear slide rule
2004.010.0018
Keuffel & Esser Co.
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Keuffel and Esser Polyphase Mannheim 4053-2 8" Linear slide rule
2004.010.0019
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0020
Keuffel & Esser Co.
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Keuffel and Esser Mannheim with glass cursor 4031 5" Linear slide rule
2004.010.0021
Keuffel & Esser Co.
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Keuffel and Esser slide rule blank
2004.010.0022
Keuffel & Esser Co.
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