Pickett Microline 140 Slide Rule

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Pickett Microline 140 White 12" Slide Rule w/ Sheath Drafting Engineering

Pickett Microline No. 140 Yellow Slide Rule With Leather Case

Vintage Pickett Microline 140 Slide Rule and Faux Leather Case Plastic & MANUAL

PICKETT Microline 120 White Slide Rule Engineering Math Tool Calculator Ruler