{"product_id":"starrett-52507-blade-micrometer-4-to-5-inches","title":"Starrett 52507 Blade Micrometer 4 to 5 Inches","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 52507 is a mechanical blade micrometer designed for measuring in narrow slots, grooves, and recessed areas where a standard micrometer anvil cannot reach. It covers a measurement range of 4.0000 to 5.0000 inches with a graduation of 0.0010 inches, providing precise readings in tight-clearance applications. The speeder thimble allows for rapid spindle travel, reducing setup time during repetitive measurements. Both the anvil and spindle are constructed of rigid steel with a satin chrome finish for corrosion resistance and long service life. A wrench is included for lock nut adjustment. This tool is used by machinists, tool-and-die technicians, and precision measurement professionals.\u003c\/p\u003e\u003cp\u003eThe 52507 is suited for dimensional inspection tasks where blade-style contact geometry is required, such as measuring keyway widths, narrow grooves, and recessed shoulders on machined components. The blade thickness of 1\/32 inches (0.79 mm) and blade depth of 5\/16 inches (7.94 mm) allow access into confined geometry that standard outside micrometers cannot accommodate. The spindle diameter is 1\/4 inches (6.35 mm). This micrometer is appropriate for both shop-floor use and quality control inspection in manufacturing and maintenance environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMeasurement range of 4.0000 to 5.0000 inches with 0.0010-inch graduation\u003c\/li\u003e\n\u003cli\u003eSpeeder thimble for rapid, easy spindle adjustment\u003c\/li\u003e\n\u003cli\u003eBlade thickness of 1\/32 inches enables access into narrow slots and grooves\u003c\/li\u003e\n\u003cli\u003eRigid steel anvil and spindle with satin chrome finish for durability\u003c\/li\u003e\n\u003cli\u003eNon-rotating spindle design maintains consistent blade orientation during measurement\u003c\/li\u003e\n\u003cli\u003eIncludes wrench for lock nut adjustment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard outside blade micrometer for precision measurement applications requiring access to narrow or recessed features in the 4 to 5 inch range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eBlade micrometers should be handled and stored carefully to protect the blade anvil geometry from damage. Before use, verify the zero calibration at the reference standard appropriate for the measurement range. Clean contact surfaces prior to measurement to prevent debris from affecting readings. Calibration and adjustment should be performed by a qualified metrologist or toolroom technician following the manufacturer's procedure.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Measurement\u003c\/strong\u003e: 4.0000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Measurement\u003c\/strong\u003e: 5.0000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation Type\u003c\/strong\u003e: Mechanical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThimble Type\u003c\/strong\u003e: Speeder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGraduation\u003c\/strong\u003e: 0.0010 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnvil Material\u003c\/strong\u003e: Rigid Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpindle Material\u003c\/strong\u003e: Rigid Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpindle Diameter\u003c\/strong\u003e: 0.25 inches (6.35 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Satin Chrome\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlade Thickness\u003c\/strong\u003e: 0.03125 inches (0.79 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlade Depth\u003c\/strong\u003e: 0.3125 inches (7.94 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 0.609 inches (15.48 mm)\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\u003eIncludes\u003c\/strong\u003e: Wrench\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.375 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: STARRETT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 52507\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51540204847410,"sku":"52507","price":766.02,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b03943e7de58bb4ad4bb0015582c6d38.jpg?v=1785848793","url":"https:\/\/voomisupply.com\/products\/starrett-52507-blade-micrometer-4-to-5-inches","provider":"Voomi Supply","version":"1.0","type":"link"}