Metrology Equipment Catalog - Rapp Industrial Sales

C A L I B R AT I O N E Q U I P M E N TC A L I B R AT I O N E Q U I P M E N TConfidence is not enoughControl of inspection and measuring equipment is an element of the quality management that isincreasingly more important than ever before. The introduction of the ISO 9000 family ofinternational standards has led to major changes in this field as well. So, ISO 9001 specifies, amongothers, that:“all inspection and measuring equipment that can affect product quality must be identified,calibrated and adjusted at prescribed intervals, or prior to use, against certified equipment having aknown valid relationship to internationally or nationally recognized standards.”This standard also states that the supplier shall:“ensure that the inspection and measuring equipment is capable of meetingthe customers’ accuracy and precision requirements”.A Big ChoiceTESA can provide you with the mostvaried means specifically suited for theinspection and calibration of standards,measuring instruments andother plug gages. Some of them arealready described in the previous sectionsof this catalog, namely:• Gage blocks and angle gages –Section I.• Setting rings – Section C.• Steel balls – Section I.• Cylindrical setting standards withoutside diameters – Section B.• Optical flats – Section I.• Plan parallel optical flats – Section I.• Electronic levels for straightnessand flatness measurement – SectionH.• Instruments for squareness andperpendicularity measurement –Section H.• Calibration equipment for lengthmeasuring devices fitted withinductive probes – Section L.The instrument first developed forcalibrating gage blocks was animproved external micrometer, whichwas manufactured early in the 19thcentury by Brown & Sharpe by theinventor of the gage set compositions,C.E. Johansson.Gage Block CalibrationIn the hierarchical chain of dimensionaltransfers which can be traced tothe meter length unit, gage blockshold a key position. This makes themthe most important standard used inmetrology.The transference of the length unit,based on specific wavelengths of light,to gage blocks is achieved in the firstinstance by a fundamental interferentialmeasurement. From the gageblocks measured in this way, thelengths are transferred to other gageblocks by hierarchicalmeasurements.K-2Rapp Industrial Sales888 789-7277