Aletheia,
Please have a look at the above link under the title Shortest Border for more information from a reliable source.
Lyn,
When being petty and correcting others make sure that you are also correct. The border is an Australian one and under Australian law Government makes all measurement in SI units (i.e. metric). A metre is a unit of length, a meter is something with which one measures. In the above response there are twelve deliberate errors; please email me when you have found them all.

Here is your contribution with appropriate punctuation. I hope this helps, do please try to write properly. Thank you.

“Well, I am not convinced, because the Victorian Land Administration, at least, is still officially confused about this supposed border: see page 22 of
http://www.sli.unimelb.edu.au/subjects/451/418/418_2008/Lectures/Lecture%2024-%20JT%20%20Land%20Admin&%20LS%20-May2008.pdf

However, if the border really has been marked, then some public documentation must exist in addition to the marker or markers, in which case
the date & survey technology & geodetic data that were used for determining the location of the supposedly proclaimed boundary latitude would be of some interest too. Otherwise I think it is just that the islet is said to be roughly 85 meters wide
& this is not necessarily the same thing as actually having an 85 meter border upon it. So please let me know if you should learn anything more definitive.
& thanx again

I’m sure at some point that either GeoScience Australia (or the agency that looked after this stuff before them) went out and measured the island when the realised that the border ran through it.

The only photo i could dig up was the one from the article in The Age, and all of the online mapping services don’t provide a close enough image to see what is actually on the tiny rocky outcrop.