How to hang a light

Here is a basic diagram of the part needed to install a chandelier. I just received a question from a home owner about installing a light similar to this one over an old 8 inch plaster coin.

To do that I told the home owner that you would need to replace the nipple with a threaded 1/2 inch gas pipe to make it long enough.

This home owner had a house built in the 1890's and the original lighting was gas. That is why the parts needed for this job can found in the plumbing section of the hard ware store.