{"product_id":"f5163f-vintage-acumath-slide-rule-complete-set-i","title":"Vintage Acumath Slide Rule Complete Set – Includes Protective Case \u0026 Instruction Manual","description":"\u003cp class=\"text-node\"\u003e\u003cspan\u003e\u003cstrong\u003eVintage Acumath Mannheim Type Slide Rule Complete Set with Case \u0026amp; Manual\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"text-node\"\u003e\u003cspan\u003eA great vintage engineering and drafting collectible! This complete \u003cstrong\u003eAcumath No. 400\u003c\/strong\u003e Mannheim-type slide rule comes complete with its original clear indicator cursor, tan vinyl protective sleeve, and original paper instruction manual published by Acu-Rule Manufacturing Co. (St. Louis, MO).\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"text-node\"\u003e\u003cspan\u003ePerfect for vintage technology collectors, engineers, mathematicians, or as a display piece in a mid-century office or den setup.\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"text-node\"\u003e\u003cspan\u003e\u003cstrong\u003eItem Details \u0026amp; Specifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul class=\"list-node\"\u003e\n\u003cli\u003e\u003cp class=\"text-node\"\u003e\u003cspan\u003e\u003cstrong\u003eBrand\/Manufacturer:\u003c\/strong\u003e Acumath \/ Acu-Rule Manufacturing Co. (St. Louis, Missouri)\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"text-node\"\u003e\u003cspan\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e Mannheim Type (No. 400)\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"text-node\"\u003e\u003cspan\u003e\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in U.S.A.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"text-node\"\u003e\u003cspan\u003e\u003cstrong\u003eScales Included:\u003c\/strong\u003e S, K, A, B, CI, C, D, L, T\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"text-node\"\u003e\u003cspan\u003e\u003cstrong\u003eSet Includes:\u003c\/strong\u003e White slide rule with clear window cursor, original tan leatherette sleeve (~12\" long), and original printed instruction booklet\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"text-node\"\u003e\u003cspan\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul class=\"list-node\"\u003e\n\u003cli\u003e\u003cp class=\"text-node\"\u003e\u003cspan\u003e\u003cstrong\u003eVery Good Vintage Condition:\u003c\/strong\u003e The slide rule body and cursor are clean with sharp, legible markings and smooth sliding action.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"text-node\"\u003e\u003cspan\u003eThe protective vinyl case remains soft and intact with light age-appropriate wear.\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"text-node\"\u003e\u003cspan\u003eThe instruction manual shows light age toning but remains completely readable and intact. \u003cem\u003e(Please review all detail photos for exact cosmetic condition).\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"text-node\"\u003e\u003c\/p\u003e","brand":"Locker61","offers":[{"title":"Default Title","offer_id":47293645095087,"sku":null,"price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0695\/3150\/0719\/files\/2026-08-02-gZLVzfCz-IMG_9989.jpg?v=1785697218","url":"https:\/\/locker61.com\/products\/f5163f-vintage-acumath-slide-rule-complete-set-i","provider":"Locker61","version":"1.0","type":"link"}