{"product_id":"spi-91-343-4-parallel-feeler-gage-set-20-piece","title":"Spi 91-343-4 Parallel Feeler Gage Set 20 Piece","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SPI 91-343-4 is a 20-piece parallel feeler gage set designed for precision gap measurement across a range of 0.001 to 0.025 inches. Each leaf is made from steel and measures 6 inches in length and 0.5 inches in width. The parallel leaf style maintains consistent width along the full length of each blade, ensuring accurate contact across the measured surface. This set is used by HVAC technicians, mechanics, machinists, and millwrights who need reliable gap measurement during equipment alignment, adjustment, and inspection tasks.\u003c\/p\u003e\u003cp\u003eThis feeler gage set suits a wide range of trade applications including valve clearance checks, bearing fits, spark plug gap setting, flange alignment, and equipment leveling verification. The 20 graduated leaves cover the most commonly needed thicknesses in a single compact set, making it practical for both bench work and field service. Its steel construction holds up to repeated use in shop and mechanical room environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e20 steel leaves ranging from 0.001 to 0.025 inches in 20 graduated steps\u003c\/li\u003e\n\u003cli\u003eParallel leaf style provides consistent 0.5-inch width along the full 6-inch length\u003c\/li\u003e\n\u003cli\u003eSteel material for durability and dimensional stability\u003c\/li\u003e\n\u003cli\u003eCompact closed length of 6 inches for easy storage and transport\u003c\/li\u003e\n\u003cli\u003eCovers the most common gap measurement increments used in HVAC, mechanical, and machine trade work\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose parallel feeler gage set suited for gap measurement tasks in HVAC, plumbing, mechanical, and machine shop applications where blade thicknesses from 0.001 to 0.025 inches are required.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eFeeler gages are hand tools requiring no power source or special installation. Select the appropriate leaf or combination of leaves for the target gap and insert with light drag resistance as the acceptance criterion. Keep leaves clean and lightly oiled when stored to prevent corrosion and maintain measurement accuracy. Do not force leaves into tight gaps or bend them, as this will compromise dimensional accuracy.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Leaves\u003c\/strong\u003e: 20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Thickness\u003c\/strong\u003e: 0.001 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Thickness\u003c\/strong\u003e: 0.025 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThicknesses Included (inches)\u003c\/strong\u003e: 0.0010, 0.0015, 0.0020, 0.0030, 0.0040, 0.0050, 0.0060, 0.0070, 0.0080, 0.0090, 0.0100, 0.0120, 0.0140, 0.0150, 0.0160, 0.0180, 0.0200, 0.0220, 0.0240, 0.0250\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeaf Style\u003c\/strong\u003e: Parallel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeaf Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeaf Width\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosed Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosed Width\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SPI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 91-343-4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51698948964658,"sku":"91-343-4","price":44.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7bc4770356c3de783323739b7a460bb5.jpg?v=1788370239","url":"https:\/\/voomisupply.com\/products\/spi-91-343-4-parallel-feeler-gage-set-20-piece","provider":"Voomi Supply","version":"1.0","type":"link"}