A test weight providing an elongated flanged beam having a web, an upper flange connected to the web and a lower flange connected to the web. A pair of openings in the upper flange are provided on the opposing sides of the web. Plurality of plates are connected to the beam, each plate resting upon the lower flange and extending upwardly towards the upper flange. A pair of padeye lift plates are provided, one on each side of the web, each padeye plate having a portion that extends above the upper flange and through an upper flange opening. The test weights are stackable one a upon the other, wherein each of the padeye plates can be pinned to the flanged beam.