I thought I'd try to utilise the general knowledge on the forum because I'm stumped.
I had to remove the side from my bath to look for a leak for the first time and found those two things. They are quite heavy, metal and appear to have been connected to the mains. My google fu has completely failed me and I can't for the life of me figure out what they are?
Any thought?
Many thanks.

I had to remove the side from my bath to look for a leak for the first time and found those two things. They are quite heavy, metal and appear to have been connected to the mains. My google fu has completely failed me and I can't for the life of me figure out what they are?
Any thought?
Many thanks.
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