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Keuffel and Esser Thacher's Calculating Machine Type II 4012 cylindrical
1983.002.002
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig 4081-5 20" Linear slide rule
1983.057.002
Keuffel & Esser Co.
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Keuffel and Esser Thacher's Calculating Instrument 1740 cylindrical
1984.099.002
Keuffel & Esser Co.
1891-1899
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Keuffel and Esser Plastic Polyphase Mannheim 9061-1 5" Linear slide rule
1985.096.001
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig Plastic 4181-1 5" Linear slide rule
1987.012.017
Keuffel & Esser Co.
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Keuffel and Esser Polyphase Mannheim 4053-3N 10" Linear slide rule
1987.040.002
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig 4081-3 10" Linear slide rule
1988.002.003
Keuffel & Esser Co.
date 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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"The Description and Use of an Instrument Called the Double Scale of Proportion"
1993.071.001
1671
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Keuffel and Esser Favorite Mannheim 4054 10" Linear slide rule
1995.054.001
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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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 Mannheim Beginner's Slide Rule 4058C 10" Linear slide rule
2004.010.0008
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 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 Mannheim with glass cursor 4031 5" Linear slide rule
2004.010.0021
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig 4091-3 10" Linear slide rule
2004.010.0027
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig N4081-3 10" Linear slide rule
2004.010.0028
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Vector N4083-3 10" Linear slide rule
2004.010.0029
Keuffel & Esser Co.
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Keuffel and Esser Polyphase Duplex 4088-3 10" Linear slide rule
2004.010.0032
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig 4080-1 5" Linear slide rule
2004.010.0036
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig 4081-1 5" Linear slide rule
2004.010.0040
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig Special Radio Slide Rule 4082-3 10" Linear slide rule
2004.010.0044
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Trig 4090-3 10" Linear slide rule
2004.010.0047
Keuffel & Esser Co.
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Keuffel and Esser Polyphase Duplex 4088-2 8" Linear slide rule
2004.010.0052
Keuffel & Esser Co.
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Keuffel and Esser Polyphase duplex with chisel cursor 4070-1 10" Linear slide rule
2004.010.0053
Keuffel & Esser Co.
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Keuffel and Esser Mannheim "EverThere" Slide rule 4097 5" Linear slide rule
2004.010.0056
Keuffel & Esser Co.
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Keuffel and Esser Mannheim Beginner's Slide Rule 4059 8" Linear slide rule
2004.010.0059
Keuffel & Esser Co.
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Keuffel and Esser Mannheim "EverThere" Slide rule 4097C 5" Linear slide rule
2004.010.0076
Keuffel & Esser Co.
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Keuffel and Esser Duplex Power Computing Slide Rule N4135 7" Linear slide rule
2004.010.0077
Keuffel & Esser Co.
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Keuffel and Esser Sperry Pocket Calculator
2004.010.0111
Keuffel & Esser Co.
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Hudson's Horse Power Computing Scale
2004.010.0165
Keuffel & Esser Co.
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Keuffel and Esser Polyphase duplex with chisel cursor 4082 16" Linear slide rule
2004.010.0211
Keuffel & Esser Co.
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Keuffel and Esser Mannheim "Pocket" Slide rule 4098A 5" Linear slide rule
2004.010.0225
Keuffel & Esser Co.
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Keuffel and Esser Mannheim "EverThere" Slide rule 4097D 5" Linear slide rule
2004.010.0231
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Vector 4093-3 10" Linear slide rule
2004.010.0273
Keuffel & Esser Co.
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Keuffel and Esser Mannheim 4045 16" Linear slide rule
2004.010.0275
Keuffel & Esser Co.
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Keuffel and Esser Mannheim 4055 10" Linear slide rule
2004.010.0303
Keuffel & Esser Co.
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Keuffel and Esser Polyphase Duplex with chisel cursor 4060-3 5" Linear slide rule
2004.010.0304
Keuffel & Esser Co.
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Keuffel and Esser Mannheim with fine divisions 4041F 10" Linear slide rule
2004.010.0326
Keuffel & Esser Co.
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Keuffel and Esser Mannheim with glass cursor 4041 10" polyphase duplex Linear slide rule
2004.010.0336
Keuffel & Esser Co.
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Keuffel and Esser Polyphase duplex with clam shell cursor and Trig scales 4071T 10" Linear slide rule
2004.010.0415
Keuffel & Esser Co.
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Keuffel and Esser Mannheim Roy Lance Electrican's Slide Rule N4133 8" Linear slide rule
2004.010.0445
Keuffel & Esser Co.
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Keuffel and Esser Polyphase duplex with clam shell cursor 4061-3 5" Linear slide rule
2004.010.0455
Keuffel & Esser Co.
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Keuffel and Esser Triangular slide rule for use with Goodchild Mathematical Chart 4019B triangular rule
2004.010.0468
Keuffel & Esser Co.
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"Gunter's Scale" Sector
2004.010.0572
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Handmade slide rule for fetal head circumference
2004.010.0632
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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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