British Thornton Slide Rule No. P271 Log Log

Thornton 10" Slide Rule P271 Log Log Made in England with Case Instructions

Slide Rule Vintage British Thornton

Vintage British Thornton Slide Rule No. P271 Log Log with case 1968

THE SUPREME SLIDE RULE WITH ORIGINAL BOX. USED.

British Thornton AD 050 1970s Vintage Log Slide Rule + Hard Case

British Thornton AD 150 Slide Rule With Case - Vintage

1960s Vintage British Thornton AD 050 Slide Rule In original plastic case.