If you can see inside your power meter and it's of the older style with five mechanical dials, you will see that the five dials are connected to one another through a gear train like this, with the gears having a ratio of 10:1. small gear and a larger gear are connected together, one on top of the other. Gear trains often consist of multiple gears in the train, as shown in the next two figures. In the case above, the purple gear turns at a rate twice that of the blue gear.
2 feet & lt ; < b > NOT exactly < / b > < br / > Depends on the codes and type of  drain  & nbsp ; For example a trap can be located 2 feet from a vented line and the fixture located 2 feet from the trap & nbsp ; A floor drain in some codes can be located up to 15 Feet from a vent , then you have indirect drain lines such as an ice maker or ...
Drain Location: The first thing to do before buying a toilet is to measurement from wall to the center of the bolts at the base of the existing toilet. 1  This will give you the rough-in measurement of for your drain location. In most instances the measurement should be 12â which is the standard rough-in distance. Most toilets sold at home stores can fit a drain that is about 1â difference of the standard rough-in. If your measurement is between 11 and 13â you should be okay with the standard toilet. But if the distance from the wall to the center of the bolts is 10â or 14â you will need to get a toilet specific to that rough-in distance.