First off, the site has been the target of a few spammer and phishers. Putting your email address on an open post is asking for trouble.

As for the gauge, look on the back of the gauge and see if you can find the serial number and then contact Teleflex via their website and see if they have any left. I did the same for my 260 but could only find the volt meter, and trim gauge. Both were very expensive so I just opted to replace all my gauges with aftermarket ones. I would still check to see if you can get replacement originals but I think you will be looking at a new set. My .02