{"product_id":"starrett-72456-test-indicator-ball-contact-point-carbide","title":"Starrett 72456 Test Indicator Ball Contact Point Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe STARRETT 72456 is a carbide ball contact point designed for use with dial test indicators. It features a 2 mm ball diameter and a contact point length of 33.34 mm, making it suited for precise surface measurement and runout inspection tasks. The carbide tip provides excellent wear resistance under repeated contact cycles, maintaining accuracy over extended use. This type of contact point is a consumable accessory installed by machinists, tool-and-die makers, metrology technicians, and precision measurement professionals working in manufacturing, inspection, and quality control environments.\u003c\/p\u003e\n\u003cp\u003eThis contact point is designed for use with Starrett 811 and 811M Dial Test Indicators. It is commonly used in inspection setups on machine tools, surface plates, and fixtures where a ball-style contact point is required for probing curved surfaces, bores, or recessed features. The ball geometry allows consistent contact on irregular or contoured workpieces where a flat or pointed tip would produce inconsistent readings.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCarbide tip construction for long service life and resistance to wear\u003c\/li\u003e\n  \u003cli\u003e2 mm ball diameter for contact on curved and contoured surfaces\u003c\/li\u003e\n  \u003cli\u003e33.34 mm contact point length for reach into recessed measurement areas\u003c\/li\u003e\n  \u003cli\u003eBall-style geometry provides consistent contact on bores and irregular profiles\u003c\/li\u003e\n  \u003cli\u003eDesigned as a direct-fit accessory for Starrett 811 and 811M indicators\u003c\/li\u003e\n  \u003cli\u003ePoint Identification: PT23011X\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with Starrett 811 and 811M Dial Test Indicators.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eContact point replacement is performed by metrology technicians and machinists. Before changing the contact point, remove the indicator from any active measurement fixture to avoid accidental damage to the indicator mechanism. Contact points are typically threaded and require careful hand-tightening to avoid cross-threading the indicator stem. Do not apply excessive torque or use power tools when installing the contact point.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBall Diameter\u003c\/strong\u003e: 2 mm (0.0787 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTip Diameter\u003c\/strong\u003e: 2 mm (0.0780 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContact Point Length\u003c\/strong\u003e: 33.34 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContact Point Material\u003c\/strong\u003e: Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStyle\u003c\/strong\u003e: Ball\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Identification\u003c\/strong\u003e: PT23011X\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: California Prop 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: 72456\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51541188706610,"sku":"72456","price":129.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4653b8fb0b1b49ba4c8c39ad0be251c7.jpg?v=1785869765","url":"https:\/\/voomisupply.com\/products\/starrett-72456-test-indicator-ball-contact-point-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}