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Engineering Instruments Inc. 10-B 10" polyphase linear slide rule
1983.004.002
Engineering Instruments, Inc.
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Engineering Instruments, Inc. 10-B Mannheim 10" linear slide rule
1984.058.001
Engineering Instruments, Inc.
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Mannheim Slide Rule, 10" linear.
1984.058.002
Engineering Instruments, Inc.
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slide rule 10" wood Engineering Instruments Peru Indiana
1996.059.003
Engineering Instruments, Inc.
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Engineering Instruments, Inc. 10-B Linear slide rule
2004.010.0434
Engineering Instruments, Inc.
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Engineering Instruments, Inc. 250-v Linear slide rule
2004.010.0663
Engineering Instruments, Inc.
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Engineering Instruments, Inc. Linear slide rule
2004.010.0664
Engineering Instruments, Inc.
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