Wtf?
OMG:p 
What did the drop look like? Were there two, or just one.
If the property is zoned for two or more dwelling units, I can understand seeing two meters. However, there should be only be one drop and the gutter should have been visible in this photo.
What Jeff said:-)
Upgraded from ancient to semi-ancient (fuses?)
What’re They For??
Jeez, BK2!!! An experienced inspector should have seen one or **two **of these by now!!!
Rental?
Demand water heater?
Demand A/C system?
Mother/daughter?
There are lots of potential reasons for this.
Bk you should visit the low rent areas more often what is the big deal I have 3 meters;-)
When we installed a Heat Pump years ago, the power company was installing second meters for the heating/cooling only for a discounted heat/cool rate.
That’s sure going to encourage energy conservation!!!
What gutter? 
Well, it can be done like that also. Just a parallel service any way you look at it. . .