diff --git a/config.h b/config.h
index 7c150b9..1deefe9 100644
--- a/config.h
+++ b/config.h
@@ -37,8 +37,12 @@
 #define ZERO_OFFSET_Y (2500)
 
 // Offset between turret and lidar [cm]
+// Distance between the lidar optical center and the vertical laser (should be 0
+// unless mechanical constraints)
 #define OFFSET_X (0)
+// Distance between the lidar optical center and the horizontal laser
 #define OFFSET_Y (21)
+// Distance between the surface and the turret motors axis
 #define OFFSET_Z (166)
 
 #endif