diff --git a/app/src/main/java/com/mooshim/mooshimeter/common/MeterReading.java b/app/src/main/java/com/mooshim/mooshimeter/common/MeterReading.java
index 1d5da2e..52223a3 100644
--- a/app/src/main/java/com/mooshim/mooshimeter/common/MeterReading.java
+++ b/app/src/main/java/com/mooshim/mooshimeter/common/MeterReading.java
@@ -83,7 +83,7 @@ public String toString() {
 
         final String[] prefixes = new String[]{"n","\u03bc","m","","k","M","G"};
         float lval = value;
-        if(Math.abs(lval) > 1.2*max) {
+        if(Math.abs(lval) > 1.1*max) {
             return "OUT OF RANGE";
         }
         StringBuilder retval = new StringBuilder();
@@ -110,4 +110,14 @@ public static MeterReading mult(MeterReading m0, MeterReading m1) {
         }
         return rval;
     }
+    public static MeterReading ohmUI(MeterReading m0, MeterReading m1) {//for Ω UI method
+        float res=1e9f;
+        if (m0.value!=0) {res=(m1.value-m0.value*.09029f)//shunt + fuse + wire
+            /m0.value;}
+        return new MeterReading(res ,
+            (m0.n_digits+m1.n_digits)/2,
+            Math.abs(res*2),
+            "Ω"
+        );
+    }
 }
diff --git a/app/src/main/java/com/mooshim/mooshimeter/devices/MooshimeterDevice.java b/app/src/main/java/com/mooshim/mooshimeter/devices/MooshimeterDevice.java
index b6fe3a5..fa97afc 100644
--- a/app/src/main/java/com/mooshim/mooshimeter/devices/MooshimeterDevice.java
+++ b/app/src/main/java/com/mooshim/mooshimeter/devices/MooshimeterDevice.java
@@ -384,6 +384,24 @@ public MeterReading calculate() {
             }
         };
         l.add(mid);
+        mid = new MathInputDescriptor("RESISTANCE (UI METHOD)","Ω") {
+            @Override
+            public void onChosen() {}
+            @Override
+            public boolean meterSettingsAreValid() {
+                InputDescriptor id0 = (InputDescriptor)getSelectedDescriptor(Channel.CH1);
+                InputDescriptor id1 = (InputDescriptor)getSelectedDescriptor(Channel.CH2);
+                boolean valid = true;
+                valid &= id0.units.equals("A");
+                valid &= id1.units.equals("V");
+                return valid;
+            }
+            @Override
+            public MeterReading calculate() {
+                return MeterReading.ohmUI(getValue(Channel.CH1),getValue(Channel.CH2));
+            }
+        };
+        l.add(mid);
         mid = new MathInputDescriptor("THERMOCOUPLE K","C") {
             @Override
             public void onChosen() {