{"product_id":"🔴-regolo-albert-nestler-n-23-r-a-sistema-rietz-calcolatore-fodero-vintage","title":"🔴 ALBERT NESTLER Rule No. 23 RA Rietz System Calculator Vintage Case","description":"\u003cp\u003e \u003cimg src=\"https:\/\/www.aleecommerce.com\/img\/p\/4\/8\/48.jpg\" width=\"316\" height=\"384\" style=\"height: 149px; width: 138px;\"\u003e \u003cfont size=\"4\"\u003e📏 Vintage \u003cstrong\u003eALBERT NESTLER N°23R A slide rule – RIETZ model\u003c\/strong\u003e\u003c\/font\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cfont size=\"4\"\u003eProfessional engineering tool – Made in Germany\u003c\/font\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cfont size=\"4\"\u003eAn authentic 20th-century analog calculating instrument, made by the historic German company Albert Nestler AG of Lahr\/Baden, a leader in the production of precision scientific slide rules.\u003c\/font\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cfont size=\"4\"\u003eModel No. 23R A uses the Rietz system, a configuration widely used by technicians, engineers and mathematicians for complex logarithmic, exponential and trigonometric operations.\u003c\/font\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cfont size=\"4\"\u003e🧠 A vintage instrument that represents intelligence before digital: every calculation was the result of technical gestures and direct knowledge of the scale.\u003c\/font\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cfont size=\"4\"\u003e\u003ci\u003e🔧 Technical features\u003c\/i\u003e\u003c\/font\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cfont size=\"4\"\u003e📐 Rietz System – Complete Logarithmic Scales\u003c\/font\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cfont size=\"4\"\u003e📏 Overall length: 28.3 cm (11.14 in)\u003c\/font\u003e\u003c\/p\u003e \u003cp\u003e\u003cfont size=\"4\"\u003e🔍 Model: N°23R A – engraved on the front\u003c\/font\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cfont size=\"4\"\u003e🔳 Material: discoloration-protected resin with glass and metal frame slider\u003c\/font\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cfont size=\"4\"\u003e⚙️ Smooth sliding movement with multiple indicators\u003c\/font\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cspan style=\"font-size: large;\"\u003e🕰️ Period: 1950s–1970s (approximately)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cfont size=\"4\"\u003e🔍 Condition as per photo – intact, with original slider and case, slight signs of age\u003c\/font\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cfont size=\"4\"\u003e \u003c\/font\u003e\u003cspan style=\"font-size: large;\"\u003e👜 Original hard cardboard case covered with gold print\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e 📖 An age of paper, ingenuity, and calculations without electricity: The Nestler slide rule was the inseparable companion of engineers, designers, and scientists in an era when every operation was an exercise in manual precision. Every line had a meaning, every scale a function. Calculations were done on the fly, without microchips.\u003c\/p\u003e\n\u003cp\u003e A concrete symbol of human genius before the digital age.\u003c\/p\u003e \u003cp\u003e\u003ci\u003e\u003cfont color=\"#3e6938\"\u003e🎖️We've been a top-rated seller on eBay for years, with over 2,400 fully satisfied customers who have chosen our store for quality, care, and authenticity. Every item we offer is carefully selected, photographed, and described with expertise and passion.\u003c\/font\u003e\u003c\/i\u003e\u003c\/p\u003e \u003cspan style=\"color: rgb(255, 0, 16); font-family: Arial; font-size: xxx-large;\"\u003ePROMO: FREE SHIPPING THROUGHOUT ITALY!\u003c\/span\u003e \u003ci\u003e.\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003cdiv\u003e\u003ci\u003e\u003cbr\u003e\u003c\/i\u003e\u003c\/div\u003e","brand":"Il Regno del Tempo","offers":[{"title":"Default Title","offer_id":56363467997519,"sku":null,"price":85.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/3130\/7087\/files\/1_a13b4a98-9fa5-4dd5-8d12-7a6a0b3a8986.jpg?v=1762517883","url":"https:\/\/www.ilregnodeltempo.com\/en\/products\/%f0%9f%94%b4-regolo-albert-nestler-n-23-r-a-sistema-rietz-calcolatore-fodero-vintage","provider":"Il Regno del Tempo","version":"1.0","type":"link"}