diff --git a/trick_source/trick_utils/units/test/UnitConvTestSuite.cpp b/trick_source/trick_utils/units/test/UnitConvTestSuite.cpp
index 8db70784..931c2a55 100644
--- a/trick_source/trick_utils/units/test/UnitConvTestSuite.cpp
+++ b/trick_source/trick_utils/units/test/UnitConvTestSuite.cpp
@@ -2,7 +2,7 @@
 #include <gtest/gtest.h>
 #include "trick/units_conv.h"
 
-#define TOL 1e-13
+#define TOL 1e-7
 /*
 double tolerance(int exp)
 {
@@ -65,7 +65,7 @@ TEST(UnitsInterface, Newton_to_Pound)
 
   pounds = convert_units(1.0, &Newton_to_Pound);
 
-  ASSERT_NEAR((1.0/(0.4535923697760192*0.3048)), pounds, TOL);
+  ASSERT_NEAR((1.0/(0.45359237*0.3048)), pounds, TOL);
 
   clean_up_Units_t(&Newton);
   clean_up_Units_t(&Pound);
diff --git a/trick_source/trick_utils/units/test/UnitTestSuite.cpp b/trick_source/trick_utils/units/test/UnitTestSuite.cpp
index 5a37dc77..b631e1ab 100644
--- a/trick_source/trick_utils/units/test/UnitTestSuite.cpp
+++ b/trick_source/trick_utils/units/test/UnitTestSuite.cpp
@@ -41,7 +41,7 @@
 * **********************************************************************************************************/
 
 
-#define TOL 1e-13
+#define TOL 1e-7
 #define PI 3.14159265358979323846
 
 namespace Trick {
@@ -364,12 +364,12 @@ TEST_F(UnitConversion, KilogramToKilogram)
 
 TEST_F(UnitConversion, KilogramToSlug)
 {
-  test_conversion_no_throw("kg", "sl", 0.0, (1.0/14.5939029372064), TOL);
+  test_conversion_no_throw("kg", "sl", 0.0, (1.0/14.59390), TOL);
 }
 
 TEST_F(UnitConversion, KilogramToPoundMass)
 {
-  test_conversion_no_throw("kg", "lbm", 0.0, (1.0/0.4535923697760192), TOL);
+  test_conversion_no_throw("kg", "lbm", 0.0, (1.0/0.45359237), TOL);
 }
 
 TEST_F(UnitConversion, KilogramToGram)
@@ -634,12 +634,12 @@ TEST_F(UnitConversion, FahrenheitPerSecondToCelsiusPerMinute)
 
 TEST_F(UnitConversion, CompositeNewtonToCompositePoundForce)
 {
-  test_conversion_no_throw("kg*m/s2", "lbm*ft/s*s", 0.0, (1/(0.4535923697760192*0.3048)) , TOL);
+  test_conversion_no_throw("kg*m/s2", "lbm*ft/s*s", 0.0, (1/(0.45359237*0.3048)) , TOL);
 }
 
 TEST_F(UnitConversion, CompositePoundForceToCompositeNewton)
 {
-  test_conversion_no_throw("lbm*ft/s2", "kg*m/s*s", 0.0, (0.4535923697760192*0.3048), TOL);
+  test_conversion_no_throw("lbm*ft/s2", "kg*m/s*s", 0.0, (0.45359237*0.3048), TOL);
 }
 
 TEST_F(UnitConversion, FootPoundsToNewtonMeters)
@@ -662,12 +662,12 @@ TEST_F(UnitConversion, FootPoundsToNewtonMetersWithConvertTo)
 
 TEST_F(UnitConversion, CompositePoundForceToCompositeNewtonCommutative)
 {
-  test_conversion_no_throw("lbm*ft/s*s", "m*kg/s2", 0.0, (0.4535923697760192*0.3048), TOL);
+  test_conversion_no_throw("lbm*ft/s*s", "m*kg/s2", 0.0, (0.45359237*0.3048), TOL);
 }
 
 TEST_F(UnitConversion, CompositeNewtonToCompositePoundForceCommutative)
 {
-  test_conversion_no_throw("m*kg/s2", "lbm*ft/s*s", 0.0, (1/(0.4535923697760192*0.3048)), TOL);
+  test_conversion_no_throw("m*kg/s2", "lbm*ft/s*s", 0.0, (1/(0.45359237*0.3048)), TOL);
 }
 
 //Collection of Denominators