{"product_id":"starrett-688-countersink-gage-90-degree","title":"Starrett 688 Countersink Gage — 90°","description":"\u003cp\u003eProfessional direct-reading countersink gage for determining the major diameter of 90° countersinks. The dedicated angular plunger seats against the countersink surface for rapid dimensional verification.\u003c\/p\u003e\n\u003ch2\u003eAvailable Ranges\u003c\/h2\u003e\n\u003cp\u003e688-1Z (.020–.170\"), 688-2Z (.160–.360\"), 688-3Z (.360–.560\") and 688-4Z (.560–.780\"). Select the range in the dropdown above.\u003c\/p\u003e\n\u003ch2\u003eChoosing an Angle\u003c\/h2\u003e\n\u003cp\u003e90° is the standard included angle for metric flat-head screws and much general machining practice. Starrett offers the same instrument in \u003ca href=\"\/products\/starrett-687-countersink-gage-82-degree\"\u003e82°\u003c\/a\u003e and \u003ca href=\"\/products\/starrett-689-countersink-gage-100-degree\"\u003e100°\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eCalibration\u003c\/h2\u003e\n\u003cp\u003eWESTport is a precision gaging and metrology company, not only a gage supplier. Calibration, recertification and recall-interval support are available from our own calibration department — see \u003ca href=\"\/pages\/hard-gage-calibration\"\u003ehard gage calibration\u003c\/a\u003e and \u003ca href=\"\/pages\/dimensional-inspection-calibration\"\u003edimensional inspection, calibration and repair\u003c\/a\u003e, or contact us for scope and turnaround.\u003c\/p\u003e","brand":"WESTport Corp.","offers":[{"title":".020-.170\"","offer_id":51285613412388,"sku":"688-1Z","price":0.01,"currency_code":"USD","in_stock":true},{"title":".160-.360\"","offer_id":51285613445156,"sku":"688-2Z","price":0.01,"currency_code":"USD","in_stock":true},{"title":".360-.560\"","offer_id":51285613477924,"sku":"688-3Z","price":0.01,"currency_code":"USD","in_stock":true},{"title":".560-.780\"","offer_id":51285613510692,"sku":"688-4Z","price":0.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2546\/6268\/files\/STARRETT_688_COUNTERSINK_GAGE_90.png?v=1787162941","url":"https:\/\/westportcorp.com\/products\/starrett-688-countersink-gage-90-degree","provider":"WESTport","version":"1.0","type":"link"}