365 Каталог MAHR 2007 Линейно-угловые средства измерений Измерительный инструмент Стр.13-3

Каталог MAHR 2007 Линейно-угловые средства измерений Стр. 13-3 0365 ENG Lab2u

MarGage. Standards Gages and Gage Blocks Selection of Rectangular Gage Block Sets There are three criteria's to be considered 1 Calibration and Tolerance classes according to DIN EN ISO 3650 Four tolerances classes are available. Calibration class K As primary factory standard particularly for the calibration of subsidiary test laboratories e.g. for gage blocks of lower tolerance classes. Supplied on request with DKD calibration certificate indicating the deviation from the nominal size for each gage block. Calibration class 0 For maximum accuracy requirements. To be used as basic standards in test laboratories and precision inspection rooms where other gage blocks and high accuracy measuring instruments are calibrated. Tolerance class 1 For high standards of accuracy. As reference gage block for the inspection room. Designed to perform particularly accurate measurements. For setting indicating measuring instruments and for checking precision gages. Tolerance class 2 For checking production gages of quality IT 6 and IT 7. For setting indicating measuring instruments and for checking accurate dimensions in the jig and tool industry. 404 2 Material Steel or ceramic depending on application. 3 Size of Sets The 404 or 404 C is a particularly convenient set with 46 gage blocks including one for each decimal. Larger sets are particularly suited to inspection rooms and gage testing facilities since they offer the following advantages A required dimension can be made up quicker as fewer gage blocks are needed Several gage block combinations can be formed from the same dimension Greater accuracy as individual deviations add up to smaller overall error Less wear as a given gage block is not used as often