{"product_id":"insize-2921-rotary-bore-gauge","title":"Insize 2921 Rotary Bore Gauge","description":"\u003ch2\u003eInsize 2921 Rotary Bore Gauge\u003c\/h2\u003e\n\u003cp\u003eThe Insize 2921 Rotary Bore Gauge is designed to measure bore diameters where the opening is too small for a standard fixed-anvil gauge to pass through. Its rotary anvil rotates to a compact profile for insertion, then extends to full measuring position once inside the bore, allowing accurate diameter checks on bores with restricted access. Available in ranges such as 80-150mm (2921-150) and 3.2\"-5.9\" (2921-E150), the gauge is built for mechanical operation with a steel anvil contact and is designed to work with a dial indicator or dial comparator to complete the readout. This makes the 2921 series a strong fit for aerospace, automotive, and general manufacturing applications where bore access is limited but measurement accuracy still needs to meet demanding tolerances.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRotary anvil design allows the gauge to pass through small bore openings and expand for measurement\u003c\/li\u003e\n\u003cli\u003eDelivers 2µm accuracy and 1µm repeatability (without dial indicator)\u003c\/li\u003e\n\u003cli\u003eCompatible with 0.01mm or 0.001mm graduation dial indicators, or a dial comparator\u003c\/li\u003e\n\u003cli\u003eWorks with Insize setting rings (code 6312) for accurate calibration before use\u003c\/li\u003e\n\u003cli\u003eSteel anvil contact point built for durability in industrial environments\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple ranges to fit a variety of restricted-access bore applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable xmlns=\"http:\/\/www.w3.org\/1999\/xhtml\" cellspacing=\"0\" cellpadding=\"0\" dir=\"ltr\" border=\"1\" data-sheets-root=\"1\" data-sheets-baot=\"1\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"277\"\u003e\n\u003ccol width=\"468\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Ranges Available\u003c\/td\u003e\n\u003ctd\u003e80-150mm; 3.2\"-5.9\" (model 2921-E150)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy (without dial indicator)\u003c\/td\u003e\n\u003ctd\u003e2µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRepeatability (without dial indicator)\u003c\/td\u003e\n\u003ctd\u003e1µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnvil Type\u003c\/td\u003e\n\u003ctd\u003eRotary, for bores with small openings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Point Material\u003c\/td\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Opening Diameter (d)\u003c\/td\u003e\n\u003ctd\u003e57mm when bore diameter D ≤ 95mm; d = D-38 when D \u0026gt; 95mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Dial Indicator Graduations\u003c\/td\u003e\n\u003ctd\u003e0.01mm or 0.001mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Setting Ring\u003c\/td\u003e\n\u003ctd\u003eInsize setting ring (code 6312), sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperation Type\u003c\/td\u003e\n\u003ctd\u003eMechanical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eItems Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInsize rotary bore gauge in the selected range\u003c\/li\u003e\n\u003cli\u003eFitted storage\/carrying case\u003c\/li\u003e\n\u003cli\u003eInstruction manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/6991\/2348\/files\/Insize_2921_Rotary_Bore_Gauge_Data_Sheet.pdf?v=1783707975\" title=\"Insize 2921 Rotary Bore Gauge Data Sheet\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0890\/6991\/2348\/files\/PDF_image_100x100.png?v=1756409173\" alt=\"INSIZE ISHW-L20B Webster Hardness Tester Manual\"\u003eInsize 2921 Rotary Bore Gauge Data Sheet\u003c\/a\u003e\u003c\/p\u003e","brand":"Insize","offers":[{"title":"Default Title","offer_id":52530410094876,"sku":"2921-E150","price":16099.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/6991\/2348\/files\/Insize_2921_Rotary_Bore_Gauge_Front_View.jpg?v=1783708058","url":"https:\/\/precisionengineeringsupply.com\/products\/insize-2921-rotary-bore-gauge","provider":"Precision Engineering Supply","version":"1.0","type":"link"}