{"product_id":"starrett-52878-feeler-gage-parallel-leaf-tempered-steel","title":"Starrett 52878 Feeler Gage Parallel Leaf Tempered Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STARRETT 52878 is a parallel-leaf feeler gage used to measure precise clearances and gaps in mechanical assemblies. The leaf measures 0.3 mm thick, 12.7 mm wide, and 300 mm long, providing a consistent, uniform cross-section across the full length. Constructed from tempered steel, the leaf resists deformation and maintains accurate thickness under repeated use. This type of feeler gage is a standard instrument in HVAC, automotive, engine, and general mechanical service work wherever tight gap tolerances must be verified or set.\u003c\/p\u003e\u003cp\u003eParallel feeler gage leaves are used in applications that require a consistent thickness reading along the full length of the blade. Common uses include setting valve clearances, checking bearing clearances, verifying spark plug gaps, measuring brake shoe-to-drum clearance, and checking alignment tolerances in equipment assembly. This gage is suited for both shop and field use by machinists, millwrights, HVAC technicians, and general mechanical service professionals.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eParallel leaf style provides uniform thickness from tip to base for consistent readings\u003c\/li\u003e\n\u003cli\u003eTempered steel construction resists wear and maintains dimensional accuracy\u003c\/li\u003e\n\u003cli\u003e0.3 mm thickness for measuring fine clearances in mechanical and HVAC equipment\u003c\/li\u003e\n\u003cli\u003e300 mm length allows reach into deep or recessed assemblies\u003c\/li\u003e\n\u003cli\u003e12.7 mm blade width provides stable contact surface during measurement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard parallel-leaf feeler gage blade suitable for general mechanical gap measurement applications across trade and industrial service environments.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eFeeler gages are precision measurement instruments installed and used by machinists, millwrights, and service technicians. Power down and de-energize any equipment before inserting a feeler gage into a clearance or gap. Insert the blade with light, steady pressure — forcing the blade can cause deformation and affect accuracy. Clean and dry the blade before and after use to prevent corrosion and maintain measurement integrity.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.3 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeaf Width\u003c\/strong\u003e: 12.7 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeaf Length\u003c\/strong\u003e: 300 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeaf Style\u003c\/strong\u003e: Parallel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Tempered Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 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: 52878\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STARRETT","offers":[{"title":"Default Title","offer_id":51544093098290,"sku":"52878","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/18afc493076797fa3bb941cc2e3421a1.jpg?v=1785923993","url":"https:\/\/voomisupply.com\/products\/starrett-52878-feeler-gage-parallel-leaf-tempered-steel","provider":"Voomi Supply","version":"1.0","type":"link"}