{"product_id":"regle-a-calcul-ancienne-vintage-curseur-finition-ivoire-etui-cuir-retro","title":"Vintage antique slide rule, cursor, ivory finish, retro leather case","description":"\u003cp\u003e\u003cb\u003eAFW - Antique France Worldwide\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis antique slide rule, visible in the photo, is distinguished by its elongated rectangular shape and the ivory appearance of its surface. It includes several precisely printed logarithmic scales, as well as a central transparent cursor with a black hairline, typical of scientific calculation instruments from the mid-20th century. The fine graduations are arranged on three sliding segments, allowing for complex engineering or mathematical operations. The contrast between the light color of the rule and the dark shade of the cursor enhances the readability of the markings.\u003c\/p\u003e\n\n\u003cp\u003eThe set has a matte finish, with no superfluous decoration, highlighting its professional use. No markings are visible on the front face, but the arrangement of the scales and the typography of the numbers evoke a classic European model. The cursor slides the entire length, and its transparent frame offers perfect visibility of the underlying graduations. The ends of the rule are straight, without any particular rounding or ornamentation.\u003c\/p\u003e\n\n\u003cp\u003eThe photo also shows old books and a wooden stand, reinforcing the retro and scientific ambiance of the object. The slide rule is placed diagonally, allowing for observation of the detailed lines, numbers, and divisions across the entire upper face. The overall condition appears well-maintained, with no visible cracks or chips on the surface or the cursor.\u003c\/p\u003e\n\n\u003cp\u003eAccording to the keywords, the object is accompanied by a leather case (not visible in the photo), which corresponds to the traditional use of these instruments. The vintage aspect and the absence of modern plastic components confirm manufacturing prior to the digital age.\u003c\/p\u003e\n\n\u003cp\u003eThis type of slide rule was used by engineers, architects, and scientists to quickly perform complex calculations before the advent of electronic calculators, making it an iconic retro office accessory.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eCondition\u003c\/b\u003e: Used item, sold as is. Presents a good overall appearance; no cracks or major defects visible on the upper face or the cursor. The inscriptions and graduations remain clearly legible.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eDid you know?\u003c\/b\u003e Slide rules were invented in the 17th century after the discovery of logarithms. They were the primary tool for engineers until the 1970s, particularly for calculations related to space exploration and major engineering works.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eAFW Reassurance\u003c\/b\u003e: Careful packaging and fast shipping ensured by a professional seller specializing in antique and vintage items.\u003c\/p\u003e\n\n\u003cp\u003e\u003ci\u003eKeywords: slide rule, logarithmic scale, vintage calculating instrument, engineer's rule, retro office accessory, antique scientific tool, cursor rule, antique rule, leather rule case, vintage slide rule, retro mathematical tool\u003c\/i\u003e\u003c\/p\u003e","brand":"AFW","offers":[{"title":"Default Title","offer_id":54229353955655,"sku":"8744342c-7403-4e7f-9595-a484bc76eb13-PA2.00","price":19.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/5152\/8775\/files\/1_65bd69bb-cfa7-4474-a203-00b4309b3474.jpg?v=1782392783","url":"https:\/\/shop.antiquefranceworldwide.com\/en\/products\/regle-a-calcul-ancienne-vintage-curseur-finition-ivoire-etui-cuir-retro","provider":"AFW","version":"1.0","type":"link"}