{"product_id":"fowler-81-piece-rectangular-steel-gage-block-set","title":"Fowler 81-Piece Rectangular Steel Gage Block Set","description":"\u003cp\u003eThe Fowler 81-piece rectangular steel gage block set provides an extensive selection of standard inch sizes from 0.050\" through 4.000\", allowing users to build a wide variety of precision reference dimensions for checking measuring instruments, setting comparative gages and performing dimensional inspection.\u003c\/p\u003e\n\u003cp\u003eThe hardened high-carbon\/chrome steel blocks are stress relieved, precision lapped and mirror polished, and every set includes a fitted protective case and a Certificate of Inspection traceable to NIST.\u003c\/p\u003e\n\u003ch2\u003eChoosing a Grade\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eEconomy \/ Workshop\u003c\/strong\u003e is the value-oriented choice for machine shops and production floors that need a comprehensive inch set without laboratory-grade accuracy, at ±0.000050\".\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAS-1\u003c\/strong\u003e steps up to inspection-grade accuracy with individually serialized blocks and a fitted wooden case, for professional dimensional inspection where traceability per block matters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrade 0\u003c\/strong\u003e is the tightest of the three, individually inspected for size, parallelism and flatness, for precision inspection, quality-control and calibration applications.\u003c\/p\u003e\n\u003cp\u003eAll three are the same 81-piece configuration covering the same size range — the choice is purely how tight an accuracy grade the work requires.\u003c\/p\u003e\n\u003ch2\u003eCalibration and Traceability\u003c\/h2\u003e\n\u003cp\u003eGage blocks are the reference standards other instruments are set against, so their own calibration status governs the credibility of everything measured with them. WESTport provides ISO\/IEC 17025 accredited calibration to keep a set documented and controlled over its working life.\u003c\/p\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eInstrument setting and verification, comparative gage setting, dimensional inspection and layout in machine shops, manufacturing quality departments and calibration laboratories.\u003c\/p\u003e","brand":"WESTport Corp.","offers":[{"title":"Economy","offer_id":51277128302628,"sku":"53-672-081","price":0.01,"currency_code":"USD","in_stock":true},{"title":"AS-1","offer_id":51277128335396,"sku":"53-670-081","price":0.01,"currency_code":"USD","in_stock":true},{"title":"Grade 0","offer_id":51277128368164,"sku":"53-670-080-0","price":0.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2546\/6268\/files\/FOWLER_81-PIECE_ECONOMY_RECTANGULAR_STEEL_GAGE_BLOCK_SET_Part_Number_53-672-081.png?v=1786998980","url":"https:\/\/westportcorp.com\/products\/fowler-81-piece-rectangular-steel-gage-block-set","provider":"WESTport","version":"1.0","type":"link"}