Thanks, Jan! How about that—a member in Germany found an item made in Australia for a member in Seattle. The mind boggles :)
There is no doubt that it is indeed an Eco-Billy. The small Eco-Billy is rated at 700ml and mine holds 600ml. A small variation in the placement of the inner cone would make it vary 100ml.
http://www.ecobilly.com/
I hadn't put any water in it until now to measure the capacity. The simple pouring hole works surprisingly well.
I wonder how it made it all the way to Seattle, and unused at that? I have a sea kayak from New Zealand– that is a lot bigger package.
Once a jolly swagman camped by a billabong
Under the shade of a coolibah tree,
And he sang as he watched and waited till his billy boiled:
"Who'll come a-waltzing Matilda, with me?"