{"product_id":"starrett-52505-blade-micrometer-3-to-4-inches","title":"Starrett 52505 Blade Micrometer 3 to 4 Inches","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe STARRETT 52505 is a mechanical blade micrometer designed for measuring in narrow slots, grooves, keyways, and other tight-clearance areas where a standard micrometer anvil cannot reach. The blade-style anvil and spindle measure a range of 3 to 4 inches with a graduation of 0.001 inches, giving technicians and machinists precise readings in confined geometry. The blade thickness is 1\/32 inches and the blade depth is 5\/16 inches, allowing access to features that would block a conventional instrument. The satin chrome finish reduces glare in shop environments. A speeder thimble enables quick spindle travel for faster setup during repetitive measurement tasks.\u003c\/p\u003e\n\u003cp\u003eThis micrometer is suited for precision metrology work in machine shops, toolrooms, and manufacturing environments. It is used by machinists, tool and die makers, and quality control technicians who need to verify dimensions in recessed or narrow features. The 3 to 4 inch range covers a common mid-size workpiece class. A wrench is included for lock nut adjustment. The rigid steel anvil and spindle maintain measurement integrity under normal shop conditions.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBlade thickness of 1\/32 inches allows measurement in narrow slots and grooves\u003c\/li\u003e\n  \u003cli\u003eBlade depth of 5\/16 inches provides reach into recessed features\u003c\/li\u003e\n  \u003cli\u003eSpeeder thimble enables rapid spindle travel for faster measurements\u003c\/li\u003e\n  \u003cli\u003eGraduation of 0.001 inches for precise mechanical readout\u003c\/li\u003e\n  \u003cli\u003eSatin chrome finish reduces glare and resists corrosion in shop use\u003c\/li\u003e\n  \u003cli\u003eWrench included for lock nut and adjustment service\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a direct-use precision measuring instrument for any application requiring a 3 to 4 inch blade micrometer with mechanical readout. No specific OEM replacement compatibility is stated for this item.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis instrument requires no installation. Before use, clean the blade anvil and spindle faces with a lint-free cloth to ensure accurate contact. Calibrate against a known standard or gauge block before performing critical measurements. Store in the provided case when not in use to protect the blades from damage and maintain calibration integrity.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Measurement\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Measurement\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperation Type\u003c\/strong\u003e: Mechanical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGraduation\u003c\/strong\u003e: 0.001 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThimble Type\u003c\/strong\u003e: Speeder\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlade Thickness\u003c\/strong\u003e: 1\/32 inches (0.79 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlade Depth\u003c\/strong\u003e: 5\/16 inches (7.94 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpindle Diameter\u003c\/strong\u003e: 1\/4 inches (6.35 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 39\/64 inches (15.48 mm)\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\u003eFinish\u003c\/strong\u003e: Satin Chrome\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: 1.188 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: California Proposition 65\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: STARRETT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 52505\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51543509074226,"sku":"52505","price":740.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d855f3200a595ca68e2e414e88ae0a9f.jpg?v=1785919687","url":"https:\/\/voomisupply.com\/products\/starrett-52505-blade-micrometer-3-to-4-inches","provider":"Voomi Supply","version":"1.0","type":"link"}