Vintage Pickett Microline 120 Yellow Slide Rule Engineering Math Tool with Case

Vintage Pickett 'Microline 120' Slide Rule w/Original Sheath Engineering Tool

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Vintage Pickett Microline 120 Yellow Slide Rule Engineering Math Tool No Case

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PICKETT Microline 120 vintage slide rule ruler w/ case

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1960s PICKETT MICROLINE 120 SLIDE RULE vintage engineering tool YELLOW WITH CASE