Seeing the effects of loading stress NPL Huddersfield used optical measurement to identify deformities in a stainless steel bolt for TEi, a leading engineering construction organisation. A stainless steel bolt being measured by NPL Huddersfield's Hexagon Metrology Optiv Classic 321GL Optical CMM TEi contacted NPL Huddersfield to determine whether there were any unexpected deviations in the thread, caused through loading in service. The NPL Huddersfield team used a Hexagon Metrology Optiv Classic 321GL Optical CMM to make the required measurements using its camera system. This allowed for a quick alignment, fast scanning and easy evaluation of the measurement data. NPL Huddersfield has access to a wide range of measuring equipment which allows the metrology team to consider alternative app

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