{"product_id":"mitutoyo-331-361-30-electronic-spline-micrometer-1-in","title":"Mitutoyo 331-361-30 Electronic Spline Micrometer 1 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MITUTOYO 331-361-30 is an electronic spline micrometer designed for measuring the diameter of splined shafts, bores, and other hard-to-reach internal features that standard anvil micrometers cannot access. It delivers a measurement accuracy of 0.0001 inch and a resolution of 0.00005 inch, making it suitable for precision inspection work in machining, manufacturing, and toolroom environments. The 1\/4 inch spindle diameter and 0.18mm head diameter allow the instrument to reach into tight grooves and narrow spline roots. A ratchet stop thimble ensures consistent measuring force on every reading. The satin chrome finish reduces glare under shop lighting. Licensed machinists, quality control technicians, and toolroom professionals are the primary users.\u003c\/p\u003e\n\u003cp\u003eThis micrometer is built for precision dimensional inspection of splined components encountered in drive systems, gearboxes, and machined shaft assemblies. With a 1 inch measuring range and a 32mm throat depth, it handles a practical range of spline and groove geometries found in both prototype and production inspection settings. The data output port supports connection to a statistical process control system or data logger, making it well suited for documented inspection workflows in manufacturing quality programs. It ships with a plastic case for storage and field transport.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAccuracy of 0.0001 inch for high-precision dimensional inspection\u003c\/li\u003e\n  \u003cli\u003eResolution of 0.00005 inch (0.001mm) with 0.001 inch \/ 0.01mm graduation\u003c\/li\u003e\n  \u003cli\u003e1\/4 inch spindle diameter with spherical anvil for spline root and groove access\u003c\/li\u003e\n  \u003cli\u003e32mm throat depth accommodates a range of shaft and component geometries\u003c\/li\u003e\n  \u003cli\u003eRatchet stop thimble delivers repeatable, consistent measuring force\u003c\/li\u003e\n  \u003cli\u003eData output port for SPC integration and electronic recordkeeping\u003c\/li\u003e\n  \u003cli\u003eTUV certified; satin chrome finish; includes plastic storage case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style precision measuring instrument for splined shaft and groove inspection applications requiring a 1 inch range electronic micrometer with a narrow-head spindle configuration.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis instrument is used by metrology technicians, toolroom machinists, and quality control personnel. Before use, verify the micrometer is zeroed correctly per the manufacturer calibration procedure. Protect the measuring faces from impact and keep the instrument stored in its case when not in use. Do not apply excessive force beyond the ratchet stop, as overloading the spindle can affect calibration and accuracy.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasuring Range\u003c\/strong\u003e: 0 to 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: 0.0001 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResolution\u003c\/strong\u003e: 0.00005 inch (0.001mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGraduation\u003c\/strong\u003e: 0.001 inch \/ 0.01mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpindle Diameter\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 0.18mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThroat Depth\u003c\/strong\u003e: 32mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnvil Type\u003c\/strong\u003e: Spherical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpindle Type\u003c\/strong\u003e: Flat\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThimble Type\u003c\/strong\u003e: Ratchet Stop\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperation Type\u003c\/strong\u003e: Electronic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eData Output\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Satin Chrome\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes\u003c\/strong\u003e: Plastic Case\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertification\u003c\/strong\u003e: TUV Certified\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: MITUTOYO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 331-361-30\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MITUTOYO","offers":[{"title":"Default Title","offer_id":51558341804338,"sku":"331-361-30","price":626.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1a87977f19c500e8258a536248d5e2c1.jpg?v=1786409799","url":"https:\/\/voomisupply.com\/products\/mitutoyo-331-361-30-electronic-spline-micrometer-1-in","provider":"Voomi Supply","version":"1.0","type":"link"}