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HI-LO (QY001) Welder Inspection Tools Welding Gauge Gage Test Ulnar, Measure fillet weld size Specification: HI-LO WELDING GAGE MEASURES INTERNAL ALIGNMENT Of pipe after fit-up/ alignment, cuts radiographic rejects. Measures internal misalignment of pipe before and after tacking. Measurements read in standard one side, and metric on the opposite side. Changes from standard to metric simply remove gauge body, turn scales over and replace body; Measure internal misalignment;