Vintage Keuffel & Esser Swiss Opisometer Map Distance Measure Reader Scale 1/8". I Have Looked All Over And Could Not Find Another Like This One. This Opisometer Is In Excellent Working Condition And Appearance. No Scratches, No Corrosion, No Cracks And No Rust. Just A Beautiful Mirror Finish With Original Box Less Packaging. Would Make A Great Addition To Someone's Collection. Truly A Rare Find