I recently purchased a box spanner to remove a broken immersion heater, and found that it was way too big (approx 86mm AF), and simply rotated without gripping the heater.
On measuring the old heater in situ, I found the measurement to be 3 1/4 inches AF. So presumably the existing heater is an old imperial size. Is there any way to obtain a 3 1/4 inch box spanner nowadays? I`ve looked on the net, but all I can find are the too-large metric ones.
Any suggestions as to how to release my immersion heater would be gratefully received.
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