Poser Scaler
From ZBrush Info
Poser Scaler provides an easy way to scale Poser OBJ files on import and export so as to reduce rounding errors.
After installation you should have a Poser Scaler subpalette in the ZPlugin palette, with a PoserImport button, a PoserExport button and a ScaleFactor slider.
Set the slider to the ScaleFactor you want to use. The setting will be preserved between ZBrush sessions. Press the PoserImport button to import; the PoserExport button for export. For import options (such as Merge or Weld), first select the PolyMesh3D and then choose the desired settings in the Tool:Import submenu before pressing the PoserImport button. For export, set the options in the Tool:Export submenu for the mesh you wish to export, then press the PoserExport button.
Download the Poser Scaler plugin from the Download Center
For plugin installation instructions see here.
