| 摘要 |
A multiple vial universal flange level assembly for leveling and squaring the flange of a pipe section having a preassembled or subsequently assembled flanged end, including an elongated bar-like main frame having first and second bubble vials oriented to indicate when the main frame is oriented horizontally both transverse and parallel to the pipe section axis and third and fourth bubble vials for indicating when the main frame longitudinal axis is in a vertical plane when non-horizontal, together with first and second pairs of centering cones and a pair of associated rods insertable into apertures of the flange for removably assembling the main frame onto the flange.
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