Water and electricity

Fit a meter to a unit with its opening reading and the date it was read; the first month billed is the month after that date. Read meters is the phone screen for the caretaker: one big field per flat, last month's figure beside it, what it comes to straight away, and a misread dial (lower than last month) called out. Readings taken where there is no signal wait on the phone and send when it returns. Prices are per building, or per flat.