To: Mark Clayton <>
Subject: maps
From: Harvey Perkins <>
Date: Mon, 30 May 2016 13:06:11 +0000
Hi Mark

I became the unwitting keeper of that map, and it is currently on top of a bookshelf in my study.

As it happens I'll be not far from your place tomorrow night so I can drop it off to you then if that suits.

One thing to bear in mind is that the grid lines drawn on the map are based on the old goedetic datum, so the boundaries are up to something like a couple of hundred metres out relative to the new geodetic datum used these days. Maybe that doesn't matter for your purposes. What I do in the situation where a location falls close to a grid cell boundary is determine the fine scale coordinates from Google maps and determine which grid cell it fits into based on the known longitude and latitude of the COG grid lines.


On 30 May 2016 at 17:18, Mark Clayton <> wrote:

Good evening all,


Several years ago at the COG meeting at the Girl’s Grammar School there used to be a map of all the grid squares in COG’s Area of Interest. Unfortunately over the last couple of years I have not been able to attend the Wednesday night meeting as I now have other arrangements on that night. I am after whoever has that map in the hope that I can possibly borrow it for a couple of days to mark on my own maps a copy of the top section that gives the relevant grid square and number. I guarantee that it will be looked after and returned to whoever has it.


Here’s hoping it is still in existence!




<Prev in Thread] Current Thread [Next in Thread>
  • maps, Mark Clayton
    • maps, John Harris
    • maps, Harvey Perkins <=
    • maps, Mark Clayton
    • maps, Martin Butterfield

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the Canberra Ornithologists Group mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the list contact David McDonald, list manager, phone (02) 6231 8904 or email . If you can not contact David McDonald e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU