Vintage Unique Universal Slide Rule, Made in England, Boxed, Fair Condition

Universal Slide Rule Vintage 'Unique' Design Made In England Log Log Calculator

Vintage Unique Ten-Twenty Universal Slide Rule Made in England w/ Case

'Unique' Universal II Slide Rule Made in England Vintage Measuring Tool

Vintage Unique Universal Slide Rule Wood & Plastic with Instructions

Vintage UNIQUE UNIVERSAL 1 Slide Rule Original Aluminium Tin Made in England

Vintage Unique LogLog Slide Rule Simplon Boxed with Instructions Made In England

Unique Universal 1 Slide Rule Vintage Made In England 30 X4x1cm