{"product_id":"spi-30-470-9-groove-master-caliper-attachment-set-5-pc","title":"Spi 30-470-9 Groove Master Caliper Attachment Set 5 Pc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 30-470-9 is a five-piece Groove Master attachment set designed to extend the measuring capability of standard 6-inch Vernier, dial, and digital calipers. Each attachment is machined from steel with a hard chrome finish for durability and corrosion resistance. The set measures internal grooves and bores with an accuracy of 0.001 inch across a measurement range of 0.200 to 6.000 inches. Overall length is 6 inches. Licensed machinists, tool and die technicians, and precision measurement professionals use this set when standard caliper jaws cannot access grooved or recessed features.\u003c\/p\u003e\n\u003cp\u003eThe 30-470-9 is suited for shop-floor and inspection-room applications where groove geometry must be verified on machined parts. The set covers groove depths of 1.75, 5.00, 6.50, 9.50, and 13.00 millimeters and minimum bore diameters of 5.00, 7.50, 15.00, and 18.00 millimeters. Minimum pitch is 0.60 millimeters and maximum pitch is 4.00 millimeters. This range of coverage makes the set appropriate for threading, snap-ring groove, and internal undercut verification across a variety of workpiece sizes.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eFits standard 6-inch Vernier, dial, and digital calipers without modification\u003c\/li\u003e\n  \u003cli\u003eHard chrome finish over steel construction for wear and corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eAccuracy of 0.001 inch across the full measurement range\u003c\/li\u003e\n  \u003cli\u003eMeasurement range of 0.200 to 6.000 inches\u003c\/li\u003e\n  \u003cli\u003eFive attachments covering multiple groove depths and bore diameter ranges\u003c\/li\u003e\n  \u003cli\u003ePitch range of 0.60 to 4.00 millimeters accommodates a broad selection of groove profiles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with 6-inch Vernier, dial, and digital calipers. Confirm your caliper jaw geometry and flange width of 0.65 inches before ordering to ensure proper fitment.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and removal of the attachments should be performed by a qualified metrology or machining professional familiar with precision measuring instruments. Ensure the caliper is zeroed and calibrated before attaching the Groove Master set. Do not overtighten any clamping mechanism, as doing so may affect caliper accuracy or damage the attachment. Store attachments in the provided case when not in use to protect finished surfaces.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Pieces\u003c\/strong\u003e: 5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: 0.001 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Measurement\u003c\/strong\u003e: 0.200 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Measurement\u003c\/strong\u003e: 6.000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlange Width\u003c\/strong\u003e: 0.65 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGroove Depth Options (mm)\u003c\/strong\u003e: 1.75, 5.00, 6.50, 9.50, 13.00\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter Options (mm)\u003c\/strong\u003e: 5.00, 7.50, 15.00, 18.00\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Pitch\u003c\/strong\u003e: 0.60 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Pitch\u003c\/strong\u003e: 4.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Hard Chrome\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.6 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 41111600\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SPI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 30-470-9\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51694892613938,"sku":"30-470-9","price":436.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e047fd79d2979af027b6bc01b2dd485c.jpg?v=1788329419","url":"https:\/\/voomisupply.com\/products\/spi-30-470-9-groove-master-caliper-attachment-set-5-pc","provider":"Voomi Supply","version":"1.0","type":"link"}