diff --git a/Prometheus-and-WMI-CounterTypes.md b/Prometheus-and-WMI-CounterTypes.md
index 868f5e6..c0fcee3 100644
--- a/Prometheus-and-WMI-CounterTypes.md
+++ b/Prometheus-and-WMI-CounterTypes.md
@@ -47,4 +47,11 @@ This applies to WMI classes inheriting `Win32_PerfRawData`.
 | `PERF_COUNTER_MULTI_BASE`             |  `counter`      | Seems to be a time denominator. Drop. |
 | `PERF_COUNTER_HISTOGRAM_TYPE`         |  ??             | No docs.                              |
 
-To convert "PerfTime" units to seconds, divide by the result of `QueryPerformanceFrequency()`.
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+To convert "PerfTime" units to seconds, divide by the result of `QueryPerformanceFrequency()`.
+
+## Finding available counters
+This Powershell line will output available WMI classes that are of type `Win32_PerfRawData`:
+```powershell
+Get-WmiObject -query "SELECT * FROM meta_class WHERE __this ISA 'Win32_PerfRawData'" | 
+    Select-Object -ExpandProperty Name
+``` 
\ No newline at end of file