Brother KH400 is a plast flat-bed knitting machine capable of accommodating panels with needles 9 and 4.5 mm apart.

It is very similar to its counterparts, KH360, KH390, KH395, and KX395: not only are these machines also convertible but they have the same set of tools, including cast-on combs, and tension mast. The carriage design looks very similar to the carriage of KX395. In fact, by starting at pictures of both KH400 and KX395 I cannot really tell what the difference is.
Enjoy the pictures of this model while i am trying to find additional information on this knitting machine.

