Vintage Engineering Instruments Wood Slide Rule Ephemera Instruction Booklet

Vtg (1950s?) Engineering Instruments Model 10 B 10” Slide Rule w/Booklet

Vtg Slide Rule Bundle Pickett #N902ES, Engineering Instruments, 1929 Trig Book

Vintage 1952 Sun Hemmi Bamboo Electrical Engineer Slide Rule Japan No. 255

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Vintage 1952 Lawrence Slide Rule Instruction Book.

Slide Rule - Engineering Instruments, Inc. 250-V w/case & instructions

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