Real Meters, Way!
It wasn’t that long ago that everybody had cumulative electric meters. Thomas Edison invented cumulative meters at the dawn of electric utility service, way back in 1879. Though improved in the century-plus since, a meter still measured how many kilowatt-hours in total a home took since the meter was installed. Meter readers — remember them — dodging your dog and debris would enter your yard and record the total as of that day. Subtract that total from last month’s number and ta-da, the utility could calculate your monthly bill.