Vintage Sterling Precision 11" Plastic Slide Rule w/ Instructions & Case

Vintage Sterling Precision Slide Rule With Case Made in USA Ruler

Vintage Precision Sterling Slide Rule - Made In USA Drafting / Engineering Ruler

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Sterling SP Precision 11 Inch Plastic Slide Rule w/ Instructions & Case

Excellent 10" Vintage SP Sterling PRECISION SLIDE RULE Sliding Ruler U.S.A.

Vintage Precision Sterling Slide Rule USA Made White Plastic Sliderule 11" Inch