{"product_id":"nestler-nr21-rekenliniaal-slide-rule","title":"Vintage Nestler No. 21 Slide Rule – Logarithmic Slide Rule with Original Case","description":"\u003cp data-start=\"102\" data-end=\"432\"\u003eOriginal \u003cstrong data-start=\"138\" data-end=\"169\"\u003eNestler No. 21 slide rule\u003c\/strong\u003e with logarithmic scales, supplied with its original case. These classic calculating instruments were used in the 20th century by engineers, technicians, and students for complex calculations, long before electronic calculators appeared.\u003c\/p\u003e\n\u003cp data-start=\"434\" data-end=\"804\"\u003eThe slide rule is equipped with multiple scales for, among other things, multiplication, division, roots, and technical calculations. On one side, there is a transparent window with an indicator for accurate reading. Instructions and conversion tables are also printed on the scale, which is characteristic of professional technical models from this period.\u003c\/p\u003e\n\u003cp data-start=\"806\" data-end=\"1101\"\u003eNestler was a German manufacturer of high-quality measuring and calculating instruments and was known for the accuracy and quality of their slide rules. This item comes with its original protective cover, which shows clear signs of wear but still protects the instrument well.\u003c\/p\u003e\n\u003cp data-start=\"1103\" data-end=\"1358\"\u003eToday, slide rules are popular among collectors of \u003cstrong data-start=\"1166\" data-end=\"1251\"\u003escientific instruments, vintage office objects, and technical memorabilia\u003c\/strong\u003e. In addition, it makes for a particularly decorative object for a workspace, study, or design interior.\u003c\/p\u003e\n\u003cp data-start=\"1360\" data-end=\"1473\"\u003eCondition: vintage condition with signs of use. The case shows wear and damage due to age and use.\u003c\/p\u003e","brand":"The Collectionist","offers":[{"title":"Default Title","offer_id":44061553328342,"sku":null,"price":15.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0530\/1442\/9896\/products\/image_98b9f1cf-777f-488e-835d-91297deb4c3a.heic?v=1678200566","url":"https:\/\/thecollectionist.nl\/en\/products\/nestler-nr21-rekenliniaal-slide-rule","provider":"The Collectionist","version":"1.0","type":"link"}