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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 Log Log Duplex Decitrig 4081-5 20" Linear slide rule 1983.057.002 Keuffel & Esser Co. View |
Keuffel and Esser Thacher's Calculating Instrument 1740 cylindrical 1984.099.002 Keuffel & Esser Co. 1891-1899 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 |
"The Description and Use of an Instrument Called the Double Scale of Proportion" 1993.071.001 1671 View |
Keuffel and Esser Favorite Mannheim 4054 10" Linear slide rule 1995.054.001 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 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 Mannheim Beginner's Slide Rule 4058C 10" Linear slide rule 2004.010.0008 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 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 Mannheim with glass cursor 4031 5" Linear slide rule 2004.010.0021 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex Decitrig 4091-3 10" Linear slide rule 2004.010.0027 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex Decitrig N4081-3 10" Linear slide rule 2004.010.0028 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex Vector N4083-3 10" Linear slide rule 2004.010.0029 Keuffel & Esser Co. View |
Keuffel and Esser Polyphase Duplex 4088-3 10" Linear slide rule 2004.010.0032 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex Decitrig 4080-1 5" Linear slide rule 2004.010.0036 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex Decitrig 4081-1 5" Linear slide rule 2004.010.0040 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex Decitrig Special Radio Slide Rule 4082-3 10" Linear slide rule 2004.010.0044 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex Trig 4090-3 10" Linear slide rule 2004.010.0047 Keuffel & Esser Co. View |
Keuffel and Esser Polyphase Duplex 4088-2 8" Linear slide rule 2004.010.0052 Keuffel & Esser Co. View |
Keuffel and Esser Polyphase duplex with chisel cursor 4070-1 10" Linear slide rule 2004.010.0053 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim "EverThere" Slide rule 4097 5" Linear slide rule 2004.010.0056 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim Beginner's Slide Rule 4059 8" Linear slide rule 2004.010.0059 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim "EverThere" Slide rule 4097C 5" Linear slide rule 2004.010.0076 Keuffel & Esser Co. View |
Keuffel and Esser Duplex Power Computing Slide Rule N4135 7" Linear slide rule 2004.010.0077 Keuffel & Esser Co. View |
Keuffel and Esser Sperry Pocket Calculator 2004.010.0111 Keuffel & Esser Co. View |
Hudson's Horse Power Computing Scale 2004.010.0165 Keuffel & Esser Co. View |
Keuffel and Esser Polyphase duplex with chisel cursor 4082 16" Linear slide rule 2004.010.0211 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim "Pocket" Slide rule 4098A 5" Linear slide rule 2004.010.0225 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim "EverThere" Slide rule 4097D 5" Linear slide rule 2004.010.0231 Keuffel & Esser Co. View |
Keuffel and Esser Log Log Duplex Vector 4093-3 10" Linear slide rule 2004.010.0273 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim 4045 16" Linear slide rule 2004.010.0275 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim 4055 10" Linear slide rule 2004.010.0303 Keuffel & Esser Co. View |
Keuffel and Esser Polyphase Duplex with chisel cursor 4060-3 5" Linear slide rule 2004.010.0304 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim with fine divisions 4041F 10" Linear slide rule 2004.010.0326 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim with glass cursor 4041 10" polyphase duplex Linear slide rule 2004.010.0336 Keuffel & Esser Co. View |
Keuffel and Esser Polyphase duplex with clam shell cursor and Trig scales 4071T 10" Linear slide rule 2004.010.0415 Keuffel & Esser Co. View |
Keuffel and Esser Mannheim Roy Lance Electrican's Slide Rule N4133 8" Linear slide rule 2004.010.0445 Keuffel & Esser Co. View |
Keuffel and Esser Polyphase duplex with clam shell cursor 4061-3 5" Linear slide rule 2004.010.0455 Keuffel & Esser Co. View |
Keuffel and Esser Triangular slide rule for use with Goodchild Mathematical Chart 4019B triangular rule 2004.010.0468 Keuffel & Esser Co. View |
"Gunter's Scale" Sector 2004.010.0572 View |
Handmade slide rule for fetal head circumference 2004.010.0632 View |
Keuffel and Esser Polyphase Mannheim 9050-1 5" Linear slide rule 2004.010.0708 Keuffel & Esser Co. View |
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