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Keuffel and Esser Linear slide rule
2004.010.0319
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0320
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0321
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 Brick-O-Meter Linear slide rule
2004.010.0330
Keuffel & Esser Co.
August 5, 1938
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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 Mannheim Roy Lance Electrican's Slide Rule 4133 8" Linear slide rule
2004.010.0350
Keuffel & Esser Co.
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Hemmi Slide Rule Co. Linear slide rule
2004.010.0365
Hemmi Slide Rule Co.
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Hemmi Slide Rule Co. Linear slide rule
2004.010.0366
Hemmi Slide Rule Co.
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J.M. Reed Quick Trig Circular slide rule
2004.010.0367
J. M. Reed
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Keuffel and Esser Linear slide rule
2004.010.0370
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0371
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0372
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0373
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0374
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0375
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig 4091-3 10" Linear slide rule
2004.010.0376
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Vector 4093-3 10" Linear slide rule
2004.010.0377
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Vector 4093-3 10" Linear slide rule
2004.010.0378
Keuffel & Esser Co.
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Keuffel and Esser Special Radio Linear slide rule
2004.010.0379
Keuffel & Esser Co.
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2004.010.0400
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Keuffel and Esser Linear slide rule
2004.010.0405
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Vector 4093-3 10" Linear slide rule
2004.010.0406
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0408
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 Polyphase Duplex 4088-3 10" Linear slide rule
2004.010.0416
Keuffel & Esser Co.
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Keuffel and Esser Duplex Merchant's Slide Rule 4095-3 10" Linear slide rule
2004.010.0417
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0418
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0424
Keuffel & Esser Co.
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Keuffel and Esser C987 Linear slide rule
2004.010.0429
Keuffel & Esser Co.
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Keuffel and Esser Residential Building Cost Slide rule
2004.010.0430
Keuffel & Esser Co.
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Keuffel and Esser Log Log Duplex Decitrig 4081-3 10" Linear slide rule
2004.010.0431
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0432
Keuffel & Esser Co.
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ACU Rule Linear slide rule
2004.010.0433
ACU Rule
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Engineering Instruments, Inc. 10-B Linear slide rule
2004.010.0434
Engineering Instruments, Inc.
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ACU Rule Linear slide rule
2004.010.0435
ACU Rule
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E.B.B.&S. 100 Linear slide rule
2004.010.0436
E.B.B.&S.
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Dietzgen 1767P National Linear slide rule
2004.010.0437
Dietzgen
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Keuffel and Esser Linear slide rule
2004.010.0439
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0440
Keuffel & Esser Co.
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Keuffel and Esser Nordell Sewer slide rule
2004.010.0441
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0442
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0443
Keuffel & Esser Co.
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Keuffel and Esser Linear slide rule
2004.010.0444
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
2004.010.0451
Keuffel & Esser Co.
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Keuffel and Esser Polyphase duplex with clam shell cursor 4061-3 5" Linear slide rule
2004.010.0452
Keuffel & Esser Co.
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Keuffel and Esser Polyphase duplex with clam shell cursor 4061-3 5" Linear slide rule
2004.010.0453
Keuffel & Esser Co.
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Keuffel and Esser Polyphase duplex with clam shell cursor 4061-3 5" Linear slide rule
2004.010.0454
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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