WUT Illustrated Commentary on the FCI Dachshund Breed Standard
The WUT has produced an excellent commentary on the FCI Breed Standard with illustrations of correct and faulty construction and movement. You can find it here (PDF). The majority of this is relevant to the UK Standard and is a helpful explanation for UK judges as well as FCI ones.
Note, however, that the labels for overshot and undershot mouths have been transposed. Overshot is where the top jaw is longer than the lower jaw. Undershot is when the lower jaw is longer than the upper jaw.