On a recent trip to New Zealand, we stopped at a very interesting museum in Warkworth; north of Auckland. Information can be found here:

http://www.wwmuseum.orconhosting.net.nz/

It was full of old artifacts arranged in very interesting displays. Well worth stopping by if you are there. Outside was a pole full of New Zealand insulators. There aren't many types, and they are all porcelain. View the original for a larger image. Posted below the pole was a description of each piece. See the next picture.