Check the listing for details. Vintage Pickett No. 121 Slide Rule - With Original Saddle-Grain Sheath. Condition: Used. Listed at 15.00 USD. Step back into the era of analog precision with this classic Pickett No. 121 Linear Slide Rule. This "Made in U.S.A." tool was the standard for mid-century science and engineering students and remains a fantastic collectible or functional piece of STEM history.
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