Precision Sterling Slide Rule ~ VINTAGE Made In USA ~ 11" Long ~

SP Precision Sterling Slide Rule ~ VINTAGE Made In USA ~ 11" Long ~ *NO CASE*

Vintage SP Precision Sterling Slide Ruler Made in USA VGC

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

Vintage Sterling Precision Slide Rule, 11" L W/Case & Instructions, Made in USA.

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

Vintage SP Precision Sterling Slide Rule Made in USA - 11" long - No Case

VINTAGE SP PRECISION STERLING SLIDE RULE RULER