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slide rule tie clip
1983.077.003
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Lovelace Foundation Nuclear Bomb Effects Computer
1983.084.002
Lovelace Foundation
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EPSCO Microwave Decibel Calculator
1983.096.001
EPSCO
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Keuffel and Esser Log Log Duplex Decitrig Plastic 4181-1 5" Linear slide rule
1985.086.004
Keuffel & Esser Co.
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Walt Disney linear Mickey Mouse slide rule
1987.036.001
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Currency Conversion Slide Chart
1987.078.024
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slide rule tie clip
1990.056.002
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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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Exposure Calculator
1990.062.004.2
MIT, High Voltage Lab
October 20, 1943
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slide rule tie clasp
2000.002.001
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Poper Musical Slide Rule
2004.010.0135
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Whitehead & Hoag Co. Circular slide rule
2004.010.0169
The Whitehead & Hoag Co.
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The Whitehead & Hoag Co. Circular slide rule
2004.010.0171
The Whitehead & Hoag Co.
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Keuffel and Esser Circular slide rule
2004.010.0175
Keuffel & Esser Co.
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W. & L.E. Gurley Cox's Stadia Computer
2004.010.0184
Gurley
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Des Moines Bridge & Iron Company's Calculator
2004.010.0188
Des Moines Bridge & Iron Co.
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Keuffel and Esser Nordell Sewer slide rule
2004.010.0269
Keuffel & Esser Co.
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Keuffel and Esser Model 4635 Syrup rule
2004.010.0274
Keuffel & Esser Co.
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Keuffel and Esser Brick-O-Meter Linear slide rule
2004.010.0330
Keuffel & Esser Co.
August 5, 1938
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Keuffel and Esser Linear slide rule
2004.010.0444
Keuffel & Esser Co.
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M. T. Brockman Linear slide rule
2004.010.0459
Lawrence
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Keuffel and Esser Portland Cement linear slide rule
2004.010.0464
Keuffel & Esser Co.
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Keuffel and Esser Cardiac Slide Rule
2004.010.0516
Keuffel & Esser Co.
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Keuffel and Esser Beatley IQ Slide Rule
2004.010.0517
Keuffel & Esser Co.
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O'Neill-Payne Fuel Combustion Calculator
2004.010.0518
O'Neill-Payne
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Keuffel and Esser/Hunnicutt and Associates Residential Building Cost slide rule
2004.010.0639
Keuffel & Esser Co.
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Keuffel & Esser/Picker X-ray, Fetal Medical Slide Rule
2004.010.0640
Keuffel & Esser Co.
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Keuffel and Esser Braille slide rule
2006.011.001
Keuffel & Esser Co.
1952-1955
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Coil weight slide rule
2007.034.001
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Raydist em calculator
IN-1726
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