diff --git a/benchtop-fe/src/parsers/Transducer.js b/benchtop-fe/src/parsers/Transducer.js
index 07da1ae..a516d9e 100644
--- a/benchtop-fe/src/parsers/Transducer.js
+++ b/benchtop-fe/src/parsers/Transducer.js
@@ -11,7 +11,7 @@ const delta = (index, value, masterValues) => {
   return Math.abs(masterValues[index]["Low Limit"] - value);
 }
 
-export default function parseTransducer(fileName, content, accuracy){
+export default function parseTransducer(content, accuracy){
   accuracy = accuracy / 100.0; // Comes in as Percent
   const transducerData = [];
 
@@ -101,12 +101,21 @@ export default function parseTransducer(fileName, content, accuracy){
       }
 
       // Once we have the readings and master values, we can do the math
+      // Doing Map, so we can have the paired index between GaugeReading and Master Value
       transducerInfo["Gauge Reading"] = transducerInfo["Gauge Reading"].map((v, idx) => ({
           Value: v,
           "In Range": inRange(idx, v, transducerInfo["Master Value"]),
           Delta: delta(idx, v, transducerInfo["Master Value"]),
       }));
 
+      // Calculate Out of Tolerances
+      for (const reading of transducerInfo["Gauge Reading"]) {
+          reading["Out Of Tolerance"] = 0;
+          if (!reading["In Range"]) {
+              reading["Out Of Tolerance"] = reading["Delta"];
+          }
+      }
+
       transducerData.push(transducerInfo);
   }
 
diff --git a/benchtop-fe/src/parsers/__tests__/parseTransducer.test.js b/benchtop-fe/src/parsers/__tests__/parseTransducer.test.js
index f82c1eb..309ed01 100644
--- a/benchtop-fe/src/parsers/__tests__/parseTransducer.test.js
+++ b/benchtop-fe/src/parsers/__tests__/parseTransducer.test.js
@@ -4,8 +4,6 @@ const fs = require('fs');
 const path = require('path');
 import parseTransducer from "../Transducer"
 
-// const file = fs.readFileSync("src/parsers/__tests__/transducer_verify.txt", 'utf8')
-
 
 function readFiles(dir) {
   const files = [];
@@ -29,7 +27,7 @@ describe("Test for all files", () => {
   let files = readFiles("src/parsers/__tests__/transducer_verify/");
   for (const file of files) {
     test(`Can parse ${file.name}`, () => {
-      const transducers = parseTransducer(file.name, file.content, 0.05)
+      const transducers = parseTransducer(file.content, 0.05)
 
       expect(transducers.length).toBeGreaterThan(0)
       for (const transducer of transducers) {
@@ -44,3 +42,20 @@ describe("Test for all files", () => {
     });
   }
 });
+
+describe("Testing actual calculations", () => {
+  test("It can detect if out of tolerance", () => {
+    const content = fs.readFileSync("src/parsers/__tests__/transducer_verify/Blackbelt with flow 220601_143736 Transducer Verify.txt", 'utf8');
+    const transducers = parseTransducer(content, 0.05);
+    for (const transducer of transducers) {
+      let anyOOT = false;
+      for (const gauge of transducer["Gauge Reading"]) {
+        if (!gauge["In Range"]) {
+          anyOOT = true;
+          expect(gauge["Out Of Tolerance"]).toBeGreaterThan(0)
+        }
+      }
+      expect(anyOOT).toBeTruthy();
+    }
+  })
+});
\ No newline at end of file