{"product_id":"4-brass-sliding-caliper-100-mm-notched-jaws-for-jewellery-and-watch-measurement-gem-and-bead-gauge","title":"4\" Brass Sliding Caliper, 100 mm, Notched Jaws for Jewellery and Watch Measurement, Gem and Bead Gauge","description":"\u003cp\u003eFor jewellers and watchmakers needing reliable inside-diameter measurements, this UK-stocked brass sliding caliper is a workshop staple. Its non-magnetic construction and notched jaws are ideal for accurately sizing rings, bezels, and watch components without risk to delicate movements.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSolid brass construction prevents magnetising watch movements or scratching delicate workpieces.\u003c\/li\u003e\n\u003cli\u003eNotched jaws are specifically shaped for taking accurate inside-diameter measurements.\u003c\/li\u003e\n\u003cli\u003eDual metric and imperial scales are clearly etched onto the body for easy reading.\u003c\/li\u003e\n\u003cli\u003eA knurled brass thumbscrew locks the sliding jaw securely for transferring measurements.\u003c\/li\u003e\n\u003cli\u003eProvides a full measuring range of 100mm \/ 4 inches for common bench tasks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho it's for\u003c\/h3\u003e\n\u003cp\u003eA practical measuring tool for UK bench jewellers, horologists, and clockmakers. Also favoured by model makers and engineers who require a non-marring, non-magnetic caliper for working with delicate materials and components.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Solid Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasuring Range:\u003c\/strong\u003e 100mm \/ 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScales:\u003c\/strong\u003e Metric (mm) and Imperial (inches)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ts-trust\"\u003e\u003cstrong\u003eFree UK delivery\u003c\/strong\u003e · \u003cstrong\u003eSame-day dispatch\u003c\/strong\u003e before 2pm · \u003cstrong\u003e30-day returns\u003c\/strong\u003e\u003c\/p\u003e\n\u003cspan data-toolsmith-sku-index style=\"position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden\" aria-hidden=\"true\"\u003eSKU: QN-51T2-8F07\u003c\/span\u003e\n\n\u003c!-- TS:RELATED-GUIDES v1 --\u003e\n\u003cdiv class=\"ts-related-guides\" style=\"margin-top:2em;padding:1em;border-top:1px solid #e0d4c0;\"\u003e\n\u003ch3 style=\"margin:0 0 .5em 0;font-size:1.1em;\"\u003eRelated buying guides\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:1.2em;\"\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/news\/watch-repair-toolkit-under-60-uk-first-set-2026\"\u003eWatch Repair Toolkit Under £60: Your First Set (UK, 2026)\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/news\/watchmaker-tweezers-aa-3c-5-anti-magnetic-uk-buying-guide-2026\"\u003eWatchmaker Tweezers: AA, 3C, 5 — Anti-Magnetic, Brass \u0026amp; Carbon (UK Buying Guide)\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/news\/watchmakers-loupe-buying-guide-10x-vs-20x\"\u003eWatchmaker's Loupe Buying Guide: 10× vs 20× and Eye-Strain Tradeoffs\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/watch-clock-tools\"\u003eBrowse all Watch \u0026amp; Clock Tools\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Toolsmith Ltd","offers":[{"title":"Default Title","offer_id":53139049840983,"sku":"QN-51T2-8F07","price":9.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1005\/1623\/3559\/files\/toolsmith-rebg-4-brass-sliding-caliper-100-mm-notched-jaws-for-jewellery-an-1777631770.jpg?v=1777631779","url":"https:\/\/www.toolsmithltd.co.uk\/products\/4-brass-sliding-caliper-100-mm-notched-jaws-for-jewellery-and-watch-measurement-gem-and-bead-gauge","provider":"Toolsmith Ltd","version":"1.0","type":"link"}