{"product_id":"4-piece-combination-square-set-450-mm-18-or-600-mm-25","title":"4‑Piece Combination Square Set – 450 mm \/ 18\" or 600 mm \/ 24\"","description":"\u003cp\u003eDescription\u003cbr\u003eA heavy‑duty 4‑piece combination square set designed for accurate layout, angle setting, and measurement in metalworking, fabrication, and general workshop use. The set includes a cast‑iron square\/miter head for 90° and 45° reference work, a cast‑iron centering head for locating the centre of cylindrical workpieces, and a cast‑iron protractor head for adjustable angle measurement from 0–180°. The stainless‑steel rule features dual‑scale graduations for precise metric and imperial reading. Built for reliability and repeatable accuracy, this set is suited for inspection, setup, and layout tasks across a wide range of workshop environments.\u003cbr\u003e\u003cbr\u003eSpecifications\u003cbr\u003e•     Centering Head (Cast Iron) — Finds the centre of cylindrical workpieces\u003cbr\u003e•     Applicable diameter: Ø30–100 mm\u003cbr\u003e•     Accuracy: ±0.15 mm\u003cbr\u003e•     Protractor Head (Cast Iron) — Adjustable angle measurement\u003cbr\u003e•     Range: 0–180°\u003cbr\u003e•     Accuracy: ±20′\u003cbr\u003e•     Square \/ Miter Head (Cast Iron) — 90° and 45° reference\u003cbr\u003e•     90° accuracy: ±8′\u003cbr\u003e•     45° accuracy: ±10′\u003cbr\u003e•     Stainless Steel Rule Options\u003cbr\u003e•     450 mm \/ 18\" — Code: 1012‑1065\u003cbr\u003e•     600 mm \/ 24\" — Code: 1012‑0105\u003cbr\u003e•     Graduation: 1 mm (1\/64\"), 0.5 mm (1\/32\")\u003cbr\u003e\u003c\/p\u003e","brand":"Queensland Precision Machining","offers":[{"title":"450mm Rule","offer_id":43127415341099,"sku":"1012-1065","price":0.0,"currency_code":"AUD","in_stock":false},{"title":"600mm Rule","offer_id":43127415373867,"sku":"1012-0105","price":0.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/4119\/3003\/files\/Screenshot2026-03-06140422_00648946-ea81-498a-9500-39c252727a2f.jpg?v=1772772003","url":"https:\/\/precisiontoolstooling.au\/products\/4-piece-combination-square-set-450-mm-18-or-600-mm-25","provider":"Precision Tools \u0026 Tooling ","version":"1.0","type":"link"}