diff --git a/gauge.go b/gauge.go
index 6d89f18..a50e488 100644
--- a/gauge.go
+++ b/gauge.go
@@ -27,6 +27,8 @@ func NewGauge(name string, f func() float64) *Gauge {
 }
 
 // Gauge is a float64 gauge.
+//
+// See also Counter, which could be used as a gauge with Set and Dec calls.
 type Gauge struct {
 	f func() float64
 }