Linear movement in a single axis is ideal for a morphing prop. If you make the two parts separately in your modeller, export them together with the cross piece at its lowest position. Then export again with the cross piece at its highest position, and apply that as a morph target to the first one. Name the resulting dial 'up-down' or something and there you are. :) Things to be aware of if you try this: - Make sure your scaling is right before you import into Poser. You should be able to import the basic prop without any of the boxes ticked. - Don't add to, or remove from the mesh when you move the cross piece. Your vertex count should remain constant.