{"product_id":"starrett-683-internal-chamfer-gage","title":"Starrett 683 Series Internal Chamfer Gage — 0-90°","description":"\u003cp\u003eThe Starrett 683 Series internal chamfer gage reads the diameter of a chamfered hole directly, with no setting master and no arithmetic. It covers internal chamfers with an included angle anywhere in the 0-90° range, which takes in the great majority of production chamfers and lead-ins.\u003c\/p\u003e\n\u003ch2\u003eHow It Reads\u003c\/h2\u003e\n\u003cp\u003eThe gage is a direct-measure instrument. Pressed against a flat surface, it should read the set number stamped on the back of the indicator; if wear moves that reading, the gage can be adjusted back to the proper number rather than being sent out for reset. Dropped into a chamfer, the three-blade plunger locates on the chamfer face and the AGD dial reports the chamfer diameter itself.\u003c\/p\u003e\n\u003cp\u003eAn internal gage measures the \u003cstrong\u003elargest\u003c\/strong\u003e diameter of any chamfer whose included angle falls within the range printed on the dial face.\u003c\/p\u003e\n\u003ch2\u003eChoosing a Range\u003c\/h2\u003e\n\u003cp\u003eFour inch-reading ranges cover 0-3\/8\", 0-1\/2\", 0-1\" and 1-2\". Choose the range that brackets the chamfer diameter being inspected — the 0-1\" (683-3Z) is the general-purpose choice for most machine-shop work, while 1-2\" (683-4Z) covers larger bores and 0-3\/8\" (683-1Z) the small fastener holes.\u003c\/p\u003e\n\u003ch2\u003eAngle Coverage and the 684 Series\u003c\/h2\u003e\n\u003cp\u003eThe 683 Series covers 0-90° included angles. For internal chamfers between 90° and 127° — shallower, wider lead-ins — use the \u003ca href=\"\/products\/starrett-684-internal-chamfer-gage\"\u003eStarrett 684 Series\u003c\/a\u003e, which is the same instrument with a yellow-dial 90-127° range. For chamfers on an outside diameter rather than in a hole, see the \u003ca href=\"\/products\/starrett-685-external-chamfer-gage\"\u003eStarrett 685 Series external chamfer gage\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eMachined and bored hole inspection, deburring and lead-in verification, fastener and dowel hole qualification, incoming inspection, first-article and in-process quality control.\u003c\/p\u003e","brand":"WESTport Corp.","offers":[{"title":"0-3\/8\"","offer_id":51285612789796,"sku":"683-1Z","price":0.01,"currency_code":"USD","in_stock":true},{"title":"0-1\/2\"","offer_id":51285612822564,"sku":"683-2Z","price":0.01,"currency_code":"USD","in_stock":true},{"title":"0-1\"","offer_id":51285612855332,"sku":"683-3Z","price":0.01,"currency_code":"USD","in_stock":true},{"title":"1-2\"","offer_id":51285612888100,"sku":"683-4Z","price":0.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2546\/6268\/files\/Starrett_683-3Z.png?v=1787162919","url":"https:\/\/westportcorp.com\/products\/starrett-683-internal-chamfer-gage","provider":"WESTport","version":"1.0","type":"link"}