{"product_id":"mitutoyo-343-350-30-outside-micrometer-1-in-ratchet-stop","title":"Mitutoyo 343-350-30 Outside Micrometer 1 in Ratchet Stop","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe MITUTOYO 343-350-30 is a mechanical outside micrometer designed for precision measurement of external dimensions in machine shops, manufacturing environments, and field service applications. It covers a 0 to 1 inch measurement range with a graduation of 0.001 inches and an accuracy of 0.000250 inches, making it suitable for close-tolerance inspection work. The ratchet stop thimble ensures consistent measuring force on each reading, reducing operator-to-operator variation. The solid carbide anvil provides long service life against wear from hardened workpieces. A satin chrome finish resists corrosion and glare under shop lighting. The instrument ships with a plastic storage case.\u003c\/p\u003e\u003cp\u003eThis micrometer is used in precision machining, HVAC equipment fabrication, pipefitting inspection, and general mechanical service trades wherever external diameter or thickness must be verified to thousandths of an inch. It is well suited to residential and light commercial maintenance shops, tool rooms, and field service technicians who require a reliable hand-measuring tool without a digital readout. The fixed spindle design keeps calibration stable during repeated daily use.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0 to 1 inch measurement range with 0.001 inch graduation\u003c\/li\u003e\n\u003cli\u003eAccuracy of 0.000250 inches for close-tolerance inspection\u003c\/li\u003e\n\u003cli\u003eRatchet stop thimble delivers repeatable, consistent measuring force\u003c\/li\u003e\n\u003cli\u003eSolid carbide anvil resists wear from hardened and abrasive workpieces\u003c\/li\u003e\n\u003cli\u003eSatin chrome finish reduces glare and provides corrosion resistance\u003c\/li\u003e\n\u003cli\u003eIncludes plastic storage case for protection and transport\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard outside micrometer for general precision measurement applications; verify measurement range and graduation requirements match the inspection task before ordering.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eOutside micrometers require no installation but should be zeroed against the reference standard included with the instrument before each use session. Store the micrometer with a slight gap between the anvil and spindle to prevent thermal expansion from damaging the measuring faces. Calibration should be verified periodically by a qualified metrology technician in accordance with applicable quality system requirements. Handle measuring faces with care and avoid contact with abrasive surfaces when the instrument is not in use.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Range\u003c\/strong\u003e: 0 to 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGraduation\u003c\/strong\u003e: 0.001 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: 0.000250 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnvil Type\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThimble Type\u003c\/strong\u003e: Ratchet Stop\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnvil Diameter\u003c\/strong\u003e: 13.00 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpindle Diameter\u003c\/strong\u003e: 6.35 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasuring Face Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Satin Chrome\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital Counter\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotating Spindle\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 11 inches L x 7 inches W x 2 inches H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes\u003c\/strong\u003e: Plastic Case\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 343-350-30\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MITUTOYO","offers":[{"title":"Default Title","offer_id":51559592165682,"sku":"343-350-30","price":978.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1189969211c6d7af6ffad6c6aa4e15e7.jpg?v=1786436123","url":"https:\/\/voomisupply.com\/products\/mitutoyo-343-350-30-outside-micrometer-1-in-ratchet-stop","provider":"Voomi Supply","version":"1.0","type":"link"}