Bidspirit auction | Antique Slide Rule and Folding

Antique Slide Rule and Folding Ruler - Slide Rule: Antique instrument for scientific calculations, with a white body, numerical scale, and sliding cursor. With case. Folding Ruler: Folding wooden measuring ruler with metal joints. It is functional and opens/closes correctly in all sections. The ruler measures 2 meters when fully extended. Both items show signs of use and patina from age, but are complete and operational.