VINTAGE UNIQUE UNIVERSAL 1 SLIDE RULE MODEL UI MADE IN ENGLAND

Vintage Unique Universal Slide Rule Wood & Plastic with Instructions

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

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

Halden Calculex Circular Slide Rule With Instruction Book And Case

Vintage Unique Universal I Model U.I. Slide Rule w/ Box - Made in England

Faber Castell Slide Rule with case & 2 "Unique" Log-Log's with instructions.

Vintage ‘UNIQUE’ Log Log Wooden Slide Rule Original Case 1950s - Made in England