In message ,
newshound writes
On 13/03/2019 15:00, Andy Burns wrote:
George Miles wrote:

I dont know if its iron or steel
steel ones are about 3mm thickness, iron typically double that.

Easy enough to tell from the shape and finish, once the back side is
exposed. If you can lift one end on your own, it is steel :-)

Small pond?

--
Tim Lamb