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Pi Tape® brand .5mm Extended Range Outside Diameter tapes are an economical alternative to our standard tapes when an accuracy of .5mm is an acceptable tolerance. Where our standard precision diameter tapes have a measuring range of 300mm, these .5mm Extended Range tapes have a measuring range of 1800mm. One tape can cover multiple measuring requirements up to 1800mm. Each Pi Tape® brand precision measuring tape is furnished with a Calibration Report whose measurement results are traceable through NIST to the international system of units (SI).Please click here to view our ISO/IEC 17025:2017 Certificate of Accreditation (pdf). Not all items we calibrate are included in our scope, however the calibration techniques and procedures are all in compliance with ISO/IEC 17025:2017.Specialty sizes available upon request. Extended Range Outside Diameter Price List