{"product_id":"spi-30-695-1-surface-finish-comparator-30-specimens","title":"Spi 30-695-1 Surface Finish Comparator 30 Specimens","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 30-695-1 is a nickel surface finish comparator designed for measuring and visually comparing surface roughness values from 2 to 500 Ra micro inches. The set includes 30 individual specimens organized by machining process, allowing technicians, machinists, and quality control inspectors to perform quick, accurate tactile and visual comparisons directly at the machine or inspection station. Each specimen is precisely manufactured to represent a specific Ra value, and the complete set ships with a protective carrying case and printed instructions.\u003c\/p\u003e\n\u003cp\u003eThis comparator is suited for use in machine shops, manufacturing facilities, and quality labs where surface finish verification is part of production or inspection workflow. Applicable processes covered include flat lapping, grinding, horizontal milling, reaming, turning, and vertical milling. The nickel material provides durability and corrosion resistance for repeated shop floor use. Inspectors and machinists working to ISO, SAE, or military specifications will find the standards coverage relevant to their documentation requirements.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e30 nickel specimens covering 2, 4, 8, 16, 32, 63, 125, 250, and 500 Ra micro inch surface finishes\u003c\/li\u003e\n  \u003cli\u003eOrganized by machining process: flat lapping, grinding, horizontal milling, reaming, turning, and vertical milling\u003c\/li\u003e\n  \u003cli\u003eMeets ISO, SAE, and military specification standards for surface roughness comparison\u003c\/li\u003e\n  \u003cli\u003eIncludes protective carrying case for storage and transport\u003c\/li\u003e\n  \u003cli\u003ePrinted instructions included for reference at point of use\u003c\/li\u003e\n  \u003cli\u003eNickel construction for shop-floor durability and resistance to corrosion\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use as a surface roughness reference standard in machine shops and inspection environments where flat lapping, grinding, milling, reaming, and turning processes are evaluated against ISO, SAE, or military surface finish specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eNo installation is required. This is a hand-held reference tool used by machinists and quality inspectors for comparative surface finish evaluation. Store specimens in the included case to prevent surface contamination or damage that could affect reading accuracy. Keep specimens clean and handle by the edges to maintain the integrity of the reference surfaces.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface Finish Range\u003c\/strong\u003e: 2 to 500 Ra micro inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Specimens\u003c\/strong\u003e: 30\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Nickel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMachining Processes Covered\u003c\/strong\u003e: Flat Lapping, Grinding, Horizontal Milling, Reaming, Turning, Vertical Milling\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ISO, SAE, Military Specifications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes Case\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes Instructions\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.36 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 41114508\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: SPI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 30-695-1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51721567928626,"sku":"30-695-1","price":162.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f5e09c0f019c55eceed1b0b4f71f0919.jpg?v=1788578808","url":"https:\/\/voomisupply.com\/products\/spi-30-695-1-surface-finish-comparator-30-specimens","provider":"Voomi Supply","version":"1.0","type":"link"}