--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/model/W.java	Wed Oct 01 15:42:55 2014 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/model/W.java	Wed Oct 01 15:54:47 2014 +0200
@@ -22,12 +22,6 @@
 
     protected TDoubleArrayList ws;
 
-    public static final int METER_OVER_REFPOINT = 0;
-
-    public static final int CENTIMETER_AT_GAUGE = 1;
-
-    protected int referenceSystem;
-
     public W() {
         ws = new TDoubleArrayList();
     }
@@ -42,39 +36,10 @@
     }
 
     public W(int capacity, String name) {
-        this(capacity, "", METER_OVER_REFPOINT);
-    }
-
-    public W(int capacity, String name, int referenceSystem) {
         super(name);
-        this.referenceSystem = referenceSystem;
         ws = new TDoubleArrayList(capacity);
     }
 
-    /** Sets the used reference system for W.
-     * If the W's refer to values in meters over a reference
-     * point (e.g. NN+m) they are in meter. If they are
-     * relative to the PNP of a gauge they are in centimeter. */
-    public void setReferenceSystem(int val) {
-        referenceSystem = val;
-    }
-
-    /** Return the used reference system for W.
-     * If the W's refer to values in meters over a reference
-     * point (e.g. NN+m) they are in meter. If they are
-     * relative to the PNP of a gauge they are in centimeter. */
-    public int getReferenceSystem() {
-        return referenceSystem;
-    }
-
-    /** Convenience function to get the correct unit for W values. */
-    public String getWUnit() {
-        if (getReferenceSystem() == CENTIMETER_AT_GAUGE) {
-            return "cm";
-        }
-        return "m";
-    }
-
     public void add(double value) {
         ws.add(value);
     }