This periphery tape, provides a quick, accurate and easy method of reading true diameters of both round and out-of-round forms.
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Inch Size Pi Tapes from 1/2" to 144", O.D. Measuring Tapes
Metric Size Pi Tapes from 28mm to 3600mm, O.D. Measuring Tapes
Special Inch Size Pi Tapes
Special Metric Size Pi Tapes
Economy Extended Range Pi Tapes , O.D. Measuring Tapes