{"product_id":"spi-31-479-9-inside-outside-diameter-caliper-attachment","title":"Spi 31-479-9 Inside Outside Diameter Caliper Attachment","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 31-479-9 is a two-piece inside and outside diameter attachment designed to expand the measurement capability of standard 6-inch dial or electronic calipers. The attachment mounts to the caliper jaw area and enables thread pitch measurement across a range of 1.00 to 1.50mm pitch, covering common metric fastener and fitting threads. The chrome finish resists corrosion and wear in shop environments. Instructions are included. This accessory is used by machinists, pipe fitters, and maintenance technicians who need accurate thread measurement without investing in a dedicated thread micrometer.\u003c\/p\u003e\n\u003cp\u003eThis attachment is suited for use in machine shops, maintenance facilities, and field service environments where metric thread identification is a routine task. It fits standard 6-inch dial calipers and 6-inch electronic digital calipers. Technicians working with metric-threaded fittings, fasteners, or components in HVAC, plumbing, or industrial equipment will find this a practical add-on to existing caliper tooling. The two-piece set covers both inside and outside diameter thread measurement in a single kit.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMeasures inside and outside diameter thread profiles with a standard 6-inch caliper\u003c\/li\u003e\n  \u003cli\u003eCompatible with 1.00 to 1.50mm pitch threads\u003c\/li\u003e\n  \u003cli\u003eTwo-piece set covers both ID and OD measurement in one kit\u003c\/li\u003e\n  \u003cli\u003eChrome finish for corrosion resistance in shop conditions\u003c\/li\u003e\n  \u003cli\u003eInstructions included for straightforward setup\u003c\/li\u003e\n  \u003cli\u003eLightweight at 0.05 pounds for easy handling and storage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with 6-inch dial or electronic calipers as stated by the manufacturer. Specific caliper model compatibility beyond this size and type is not provided in the product data.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eAttachment and removal should be performed with the caliper jaws fully closed and the caliper powered off or the dial at rest. Follow the included instructions for correct jaw mounting and positioning before taking measurements. Handle the chrome-finished contact surfaces carefully to avoid nicks or burrs that could affect measurement accuracy.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccessory Type\u003c\/strong\u003e: Inside and Outside Diameter Attachment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Pieces\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Pitch\u003c\/strong\u003e: 1.00mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Pitch\u003c\/strong\u003e: 1.50mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFor Use With\u003c\/strong\u003e: 6-inch dial or electronic calipers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Chrome\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes\u003c\/strong\u003e: Instructions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 pounds\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: 31-479-9\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51711710003506,"sku":"31-479-9","price":100.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/333daa97ffb547c3bcf72747b903f707.jpg?v=1788478751","url":"https:\/\/voomisupply.com\/products\/spi-31-479-9-inside-outside-diameter-caliper-attachment","provider":"Voomi Supply","version":"1.0","type":"link"}