Stop in for a cup of coffee

Probably made for a square tank. If the gauge reads full when I leave the pumps and is reasonably close to empty when it says E I am pretty good with that. Mine was a Spectre (I believe) and is just on accurate wise.
It is above full at full. 3/4 full it shows 1/4 but last 1/4 is accurate to empty...just moves slow...