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term:slide rules

2013.5.10
Keuffel & Esser model 1740 Thacher slide rule

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2014.3.2
Kreisrechenscheiber KRS 40 slide rule

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2016.2.1.1
Pickett Model 1010-ES Trig slide rule

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2016.10.1
Pickett teaching-size slide rule

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2017.8.1
Sun Hemmi slide-rule

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2018..3
Pickett Microline 140

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2018.3.2
ALCO Personal Calculator

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2018.9.1
Pickett Model N-500-T

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2018.10.1
Unbranded Slide Rule.

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2018.12.13
Keuffel & Esser Co. Slide Rule

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2018.12.14
Sterling Slide Rule

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2018.12.15
Slide rule with a missing slider

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