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TitleMakerDate Made
Keuffel and Esser Thacher's Calculating Machine Type II 4012 cylindrical1983.002.002Keuffel & Esser Co.View
Keuffel and Esser Log Log Duplex Decitrig 4081-5 20" Linear slide rule1983.057.002Keuffel & Esser Co.View
Keuffel and Esser Thacher's Calculating Instrument 1740 cylindrical1984.099.002Keuffel & Esser Co.1891-1899View
Keuffel and Esser Plastic Polyphase Mannheim 9061-1 5" Linear slide rule1985.096.001Keuffel & Esser Co.View
Keuffel and Esser Log Log Duplex Decitrig Plastic 4181-1 5" Linear slide rule1987.012.017Keuffel & Esser Co.View
Keuffel and Esser Polyphase Mannheim 4053-3N 10" Linear slide rule1987.040.002Keuffel & Esser Co.View
Keuffel and Esser Log Log Duplex Decitrig 4081-3 10" Linear slide rule1988.002.003Keuffel & Esser Co.date unknownView
Keuffel and Esser Log Log Duplex 4092 10" Linear slide rule1988.002.004Keuffel & Esser Co.View
"The Description and Use of an Instrument Called the Double Scale of Proportion"1993.071.0011671View
Keuffel and Esser Favorite Mannheim 4054 10" Linear slide rule1995.054.001Keuffel & Esser Co.View
Keuffel and Esser Log Log Duplex Decitrig 4080-3 10" linear slide rule1996.049.001Keuffel & Esser Co.View
Keuffel and Esser Polyphase Mannheim with fine divisions 4053-3F 10" Linear slide rule2004.010.0001Keuffel & Esser Co.View
Keuffel and Esser Mannheim 4056 10" Linear slide rule2004.010.0002Keuffel & Esser Co.View
Keuffel and Esser Mannheim Beginner's Slide Rule 4058C 10" Linear slide rule2004.010.0008Keuffel & Esser Co.View
Keuffel and Esser Mannheim Beginner's Slide Rule N4058W 10" Linear slide rule2004.010.0011Keuffel & Esser Co.View
Keuffel and Esser Mannheim Beginner's Slide Rule 4059 8" Linear slide rule2004.010.0018Keuffel & Esser Co.View
Keuffel and Esser Polyphase Mannheim 4053-2 8" Linear slide rule2004.010.0019Keuffel & Esser Co.View
Keuffel and Esser Mannheim with glass cursor 4031 5" Linear slide rule2004.010.0021Keuffel & Esser Co.View
Keuffel and Esser Log Log Duplex Decitrig 4091-3 10" Linear slide rule2004.010.0027Keuffel & Esser Co.View
Keuffel and Esser Log Log Duplex Decitrig N4081-3 10" Linear slide rule2004.010.0028Keuffel & Esser Co.View
Keuffel and Esser Log Log Duplex Vector N4083-3 10" Linear slide rule2004.010.0029Keuffel & Esser Co.View
Keuffel and Esser Polyphase Duplex 4088-3 10" Linear slide rule2004.010.0032Keuffel & Esser Co.View
Keuffel and Esser Log Log Duplex Decitrig 4080-1 5" Linear slide rule2004.010.0036Keuffel & Esser Co.View
Keuffel and Esser Log Log Duplex Decitrig 4081-1 5" Linear slide rule2004.010.0040Keuffel & Esser Co.View
Keuffel and Esser Log Log Duplex Decitrig Special Radio Slide Rule 4082-3 10" Linear slide rule2004.010.0044Keuffel & Esser Co.View
Keuffel and Esser Log Log Duplex Trig 4090-3 10" Linear slide rule2004.010.0047Keuffel & Esser Co.View
Keuffel and Esser Polyphase Duplex 4088-2 8" Linear slide rule2004.010.0052Keuffel & Esser Co.View
Keuffel and Esser Polyphase duplex with chisel cursor 4070-1 10" Linear slide rule2004.010.0053Keuffel & Esser Co.View
Keuffel and Esser Mannheim "EverThere" Slide rule 4097 5" Linear slide rule2004.010.0056Keuffel & Esser Co.View
Keuffel and Esser Mannheim Beginner's Slide Rule 4059 8" Linear slide rule2004.010.0059Keuffel & Esser Co.View
Keuffel and Esser Mannheim "EverThere" Slide rule 4097C 5" Linear slide rule2004.010.0076Keuffel & Esser Co.View
Keuffel and Esser Duplex Power Computing Slide Rule N4135 7" Linear slide rule2004.010.0077Keuffel & Esser Co.View
Keuffel and Esser Sperry Pocket Calculator2004.010.0111Keuffel & Esser Co.View
Hudson's Horse Power Computing Scale2004.010.0165Keuffel & Esser Co.View
Keuffel and Esser Polyphase duplex with chisel cursor 4082 16" Linear slide rule2004.010.0211Keuffel & Esser Co.View
Keuffel and Esser Mannheim "Pocket" Slide rule 4098A 5" Linear slide rule2004.010.0225Keuffel & Esser Co.View
Keuffel and Esser Mannheim "EverThere" Slide rule 4097D 5" Linear slide rule2004.010.0231Keuffel & Esser Co.View
Keuffel and Esser Log Log Duplex Vector 4093-3 10" Linear slide rule2004.010.0273Keuffel & Esser Co.View
Keuffel and Esser Mannheim 4045 16" Linear slide rule2004.010.0275Keuffel & Esser Co.View
Keuffel and Esser Mannheim 4055 10" Linear slide rule2004.010.0303Keuffel & Esser Co.View
Keuffel and Esser Polyphase Duplex with chisel cursor 4060-3 5" Linear slide rule2004.010.0304Keuffel & Esser Co.View
Keuffel and Esser Mannheim with fine divisions 4041F 10" Linear slide rule2004.010.0326Keuffel & Esser Co.View
Keuffel and Esser Mannheim with glass cursor 4041 10" polyphase duplex Linear slide rule2004.010.0336Keuffel & Esser Co.View
Keuffel and Esser Polyphase duplex with clam shell cursor and Trig scales 4071T 10" Linear slide rule2004.010.0415Keuffel & Esser Co.View
Keuffel and Esser Mannheim Roy Lance Electrican's Slide Rule N4133 8" Linear slide rule2004.010.0445Keuffel & Esser Co.View
Keuffel and Esser Polyphase duplex with clam shell cursor 4061-3 5" Linear slide rule2004.010.0455Keuffel & Esser Co.View
Keuffel and Esser Triangular slide rule for use with Goodchild Mathematical Chart 4019B triangular rule2004.010.0468Keuffel & Esser Co.View
"Gunter's Scale" Sector2004.010.0572View
Handmade slide rule for fetal head circumference2004.010.0632View
Keuffel and Esser Polyphase Mannheim 9050-1 5" Linear slide rule2004.010.0708Keuffel & Esser Co.View


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