Used to verify the performance of a Yoke
Furthermore each bar has a Pole Spacing Scale (Imperial and Metric)
The Western Instruments W-PT Pull Test Bars is used to verify the performance of a Yoke. Each W-PT is traceable to NIST, and supplied with a Certificate of Compliance to; ASTM-E1444; E709; and ASME Section V, Article 7. Each Bar is equipped with; a Machined Groove, to ensure the Yoke Legs are centered laterally; a hole in the center to permit multiple bars to be fastened together; as well as a Serial Number for tractability. Furthermore each bar has a Pole Spacing Scale (Imperial and Metric) affixed to one side, as most specifications now include Pole Distance and Weight for Calibrating Yokes
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