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

Vintage Unique Ten Twenty Slide Rule & Original Box, Instrument Made in England

Unique Log Log Slide Rule Vintage In Original Box made in England

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

Slide Rule by Unique. Made in England.

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

Vintage PIC Slide Rule Engine Divided Made in England Engineer Calculator Rule

Vintage Unique Universal Slide Rule Wood & Plastic with Instructions