Sliderules.info
- Title
- Slide Rules
- Meta Description
- Instructions on using slide rules, guidance on the price of slide rules and pictures of slide rules.
- Meta Keywords
- slide rules,slide,rules,slide-rules,value,worth,sliderules,price,collecting,collection,instructions,books,trade,slide rule prices,slide rule instructions,history,mathematics,calculators,calculation,science,Pickett,Keuffel,Esser,Faber,Castell,Thornton,Unique,Aristo,Fowler,Otis,King