Vintage UNIQUE Log Log Slide Rule No.95 With Case Mathematical Tool

Vintage Unique Log-Log Slide Rule Brighton Boxed British Engineering Calculator

Unique "LOG LOG" Engineering Slide Rule With Box Vintage Made In England S8455

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

2 x Rare Unique Log Log Slide Rule Vintage, Made in England.

Vintage A W Faber Slide Rule Original Case Engineering Survey

Vintage Unique Log Log Pocket / Mini Slide Rule Draftsman Instrument In Box

A W Faber Castell Vintage Slide Rule & Case 1957 Made In Germany - 1/92 Log-Log