A flux capacitor, compostable food containers and a love affair at Montacute House

I thought I’d gone back to the future this week when South West Water arrived with what looked like a flux capacitor that they positioned just below our office window. I spent several minutes pondering what it could be; yet another masterpiece of mechanical engineering to be squirreled away in their underground cavern that houses the immense local waterworks, a giant balloon inflator, a rocket launcher?