Meters are the sections that tell Rainmeter how to display information. Each meter needs to have a unique name, which should be put inside [Square Brackets]. It does not matter what the name is as long as there are no spaces and it is not used elsewhere within the same.ini file.

Meters by default are evaluated and displayed in the order they are in the skin .ini file. Settings like W= and H= and X= and Y= can be used to size and position meters in the context of the skin containng them. So a meter with a setting of X=0 will be positioned 0 pixels from the left edge of the skin it is in. If you drag the entire skin to another location, the meter will remain positioned 0 pixels from the left edge of the skin, irregardless of where the skin is on the screen.

There are many different types of supported meter types in Rainmeter. The manual pages for each describe them in detail, with settings specific to each type.

[Rainmeter]
DynamicWindowSize=1
Update=1000

[MeasureCPU]
Measure=CPU
Processor=0
MinValue=0
MaxValue=100

[MeterCPUBackgroundImage]
Meter=Image
SolidColor=171,54,3,150
X=0
Y=0
W=130
H=100

[MeterCPUString]
Meter=String
MeasureName=MeasureCPU
W=130
H=25
X=65
Y=5
FontFace=Trebuchet MS
FontSize=15
FontColor=255,255,255,255
StringAlign=Center
StringStyle=Bold
StringEffect=Shadow
AntiAlias=1
AutoScale=1
Text=CPU: %1

[MeterCPUHistogram]
Meter=Histogram
MeasureName=MeasureCPU
X=5
Y=5R
W=120
H=50
PrimaryColor=255,255,255,255
SolidColor=0,0,0,100
AntiAlias=1