Vintage P.I.C No. 121 Slide Rule

Vintage A.G. Thornton Electrical Slide Rule P.I.C. No. 121 27cm 10" Boxed. GC

A Boxed Vintage Slide Rule PIC No 131 by AG Thornton Ltd Made in England

Vintage Unique Universal Legible Slide Rule with Box

Vintage PIC Slide Rule No 251 British Thornton in Leather Case. Made In England

Vintage A G Thornton slide rule Made in England P I C No 101 Patent 411090

Vintage A.G. Thorton P.I.C Vintage Slide Rule 131 In Original Case - 12"

Vintage Unique Universal Slide Rule Wood & Plastic with Instructions