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Surface roughness stand comparatorFeatures• As standardized in ISO2632 / I-1975
• This set contains standard for the six most important machine methods in the prevalent AA values.
• These surface roughness is used to compare and determine the degree of the surface finish by comparision method and eye estmation or magnifying glass.
• The surface rough contrast blocks is made of 45 super carbor steel except the GCr 15 which is using to plat lapping the sample block.
• All 30 speciments are calibrated in u AA (Arithmetical Average) and in the metric equivalents um Ra.
• Classify and rough degree parameter as table Specification• TURING: um 12.5; 6.3; 3.2; 1.6; 0.8; 0.4; uin 500; 250; 125; 63; 32; 16;
• VERTICAL MILLING:um 12.5; 6.3; 3.2; 1.6; 0.8; 0.4; uin 500; 250; 125; 63; 32; 16; • HORIZONTAL MILLING: um um 12.5; 6.3; 3.2; 1.6; 0.8; 0.4; uin 500;250;125;63;32;16; • PLAIN GRINDING: um 1.6; 0.8; 0.4; 0.2; 0.1; 0.05; uin 63; 32; 16; 8; 4; 2; • EXTERNALGRINDING: um um 1.6; 0.8; 0.4; 0.2; uin 63; 32; 16; 8; • PLAT LAPPING: um um 0.1; 0.05; uin 4; 2;
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