Vintage Aristo Rietz NR 89 Slide Rule W/ Original Leather Case, Collectible Engineering Tool

A classic vintage slide rule from renowned Aristide Rietz brand, model NR 89, complete with its original leather cas. Perfect for collectors, engineers, or anyone interested in vintage scientific instruments. Features, original Aristo Rietz NR 89 slide rule, original leather case, excellent piece of mid-20th century engineering history. This item is vintage but well preserved, comes with minor wear consistent with age. Fully functional for demonstration or display purposes.