https://floormart.co.uk/collomix-wa...=fde42db22db4a8ffd30ec9db1703aa6d&fo_s=gplauk Im tempted but seems bloody expensive you not think?
Have you tested it to see if its bang on? (Give or take) The workmanship of majority of builders these days, id just be happy to have a levelled surface underneath the tap!!!
Its spot on every time, we test it in a measuring bucket every so often to check. Its honestly so much easier, you set the amount you want clip it to the side of the bucket and press go. You will definitely want to carry spare batteries though!
I looked at them, but as you say expensive. I decided a bucket with holes drilled in the side was cheaper