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Keuffel and Esser Thacher's Calculating Machine Type II 4012 cylindrical 1983.002.002 Keuffel & Esser Co. View |
Keuffel and Esser Polyphase Duplex 4088-3 10" Linear slide rule 1983.004.001 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex Decitrig 4081-5 20" Linear slide rule 1983.057.002 Keuffel & Esser Co. View |
Keuffel and Esser Polyphase Duplex 4088-3 10" Linear slide rule 1983.080.001 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim Merchant's Slide Rule with feet and box N4096 20" Linear slide rule 1984.039.001 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim Slide Rule, 12" linear. 1984.058.003 Keuffel & Esser Co. 1908 View |
Keuffel and Esser Thacher's Calculating Instrument 1740 cylindrical 1984.099.002 Keuffel & Esser Co. 1891-1899 View |
Keuffel and Esser Log Log Duplex Decitrig 4081-3 10" Linear slide rule 1985.011.008 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex 4092-3 10" Linear slide rule 1985.011.009 Keuffel & Esser Co. View |
Keuffel and Esser Polyphase Duplex 4088-2 8" Linear slide rule 1985.086.001 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex 4092-3 10" Linear slide rule 1985.086.002 Keuffel & Esser Co. View |
Keuffel and Esser Plastic Polyphase Mannheim 9061-1 5" Linear slide rule 1985.096.001 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex Decitrig Plastic 4181-1 5" Linear slide rule 1987.012.017 Keuffel & Esser Co. View |
Keuffel and Esser Polyphase Mannheim 4053-3N 10" Linear slide rule 1987.040.002 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex Decitrig 4081-3 10" Linear slide rule 1988.002.003 Keuffel & Esser Co. date unknown View |
Keuffel and Esser Log Log Duplex 4092 10" Linear slide rule 1988.002.004 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex Vector 4083-3 10" Linear slide rule 1989.027.003 Keuffel & Esser Co. View |
Keuffel and Esser Polyphase Duplex 4088-3 10" Linear slide rule 1990.005.001 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex Vector 4083-3 10" Linear slide rule 1990.061.001 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex Decitrig 4080-3 10" Linear slide rule 1990.061.002 Keuffel & Esser Co. View |
Keuffel and Esser 4035 8" linear slide rule 1992.052.004.1-.2 Keuffel & Esser Co. c. 1910 View |
Keuffel and Esser Log Log Duplex Vector 4083-3 10" Linear slide rule 1993.012.002 Keuffel & Esser Co. View |
Keuffel and Esser Favorite Mannheim 4054 10" Linear slide rule 1995.054.001 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim Student's Slide Rule 4058 10" Linear slide rule 1996.010.001 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex Decitrig 4080-3 10" linear slide rule 1996.049.001 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex 4092-3 10" Linear slide rule 1997.023.001 Keuffel & Esser Co. View |
Keuffel and Esser Polyphase Mannheim with fine divisions 4053-3F 10" Linear slide rule 2004.010.0001 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim 4056 10" Linear slide rule 2004.010.0002 Keuffel & Esser Co. View |
Keuffel and Esser Linear slide rule 2004.010.0003 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim with fine divisions 4041F 10" linear slide rule 2004.010.0004 Keuffel & Esser Co. View |
Keuffel and Esser linear slide rule 2004.010.0005 Keuffel & Esser Co. View |
Keuffel and Esser linear slide rule 2004.010.0006 Keuffel & Esser Co. View |
Keuffel and Esser F806 Linear slide rule 2004.010.0007 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim Beginner's Slide Rule 4058C 10" Linear slide rule 2004.010.0008 Keuffel & Esser Co. View |
Keuffel and Esser F808 2004.010.0009 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim Stadia Slide rule N4100 10" Linear slide rule 2004.010.0010 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim Beginner's Slide Rule N4058W 10" Linear slide rule 2004.010.0011 Keuffel & Esser Co. View |
Keuffel and Esser Polyphase Mannheim 4053-3 10" Linear slide rule 2004.010.0012 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim Beginner's Slide Rule N4058W 10" Linear slide rule 2004.010.0013 Keuffel & Esser Co. View |
Keuffel and Esser linear slide rule 2004.010.0014 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim Beginner's Slide Rule 4059 8" Linear slide rule 2004.010.0015 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim Beginner's Slide Rule 4059 8" Linear slide rule 2004.010.0016 Keuffel & Esser Co. View |
Keuffel and Esser Polyphase Mannheim 4053-2 8" Linear slide rule 2004.010.0017 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim Beginner's Slide Rule 4059 8" Linear slide rule 2004.010.0018 Keuffel & Esser Co. View |
Keuffel and Esser Polyphase Mannheim 4053-2 8" Linear slide rule 2004.010.0019 Keuffel & Esser Co. View |
Keuffel and Esser Linear slide rule 2004.010.0020 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim with glass cursor 4031 5" Linear slide rule 2004.010.0021 Keuffel & Esser Co. View |
Keuffel and Esser slide rule blank 2004.010.0022 Keuffel & Esser Co. View |
Keuffel and Esser Linear slide rule 2004.010.0023 Keuffel & Esser Co. View |
Keuffel and Esser Linear slide rule 2004.010.0025 Keuffel & Esser Co. View |
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