diff --git a/src/Base/Quantity.cpp b/src/Base/Quantity.cpp
index 97073d44e..8d293a06e 100644
--- a/src/Base/Quantity.cpp
+++ b/src/Base/Quantity.cpp
@@ -39,12 +39,6 @@
 # pragma warning(disable : 4335) // disable MAC file format warning on VC
 #endif
 
-#ifndef  DOUBLE_MAX
-# define DOUBLE_MAX 1.7976931348623157E+308    /* max decimal value of a "double"*/
-#endif
-#ifndef  DOUBLE_MIN
-# define DOUBLE_MIN 2.2250738585072014E-308    /* min decimal value of a "double"*/
-#endif
 
 using namespace Base;
 
diff --git a/src/Base/Quantity.h b/src/Base/Quantity.h
index c64d2f74b..e965215cd 100644
--- a/src/Base/Quantity.h
+++ b/src/Base/Quantity.h
@@ -27,6 +27,13 @@
 #include "Unit.h"
 #include <QString>
 
+#ifndef  DOUBLE_MAX
+# define DOUBLE_MAX 1.7976931348623157E+308    /* max decimal value of a "double"*/
+#endif
+#ifndef  DOUBLE_MIN
+# define DOUBLE_MIN 2.2250738585072014E-308    /* min decimal value of a "double"*/
+#endif
+
 namespace Base {
 
 /**
diff --git a/src/Gui/InputField.cpp b/src/Gui/InputField.cpp
index 3a106b7cd..588ce4820 100644
--- a/src/Gui/InputField.cpp
+++ b/src/Gui/InputField.cpp
@@ -40,7 +40,7 @@ using namespace Base;
 // --------------------------------------------------------------------
 
 InputField::InputField ( QWidget * parent )
-  : QLineEdit(parent)
+  : QLineEdit(parent), StepSize(1.0), Maximum(DOUBLE_MAX),Minimum(-DOUBLE_MAX)
 {
     this->setContextMenuPolicy(Qt::DefaultContextMenu);
 
@@ -149,37 +149,37 @@ void InputField::setUnit(const Base::Unit& unit)
 /// get the value of the singleStep property
 double InputField::singleStep(void)const
 {
-    return 0.0;
+    return StepSize;
 }
 
 /// set the value of the singleStep property 
-void InputField::setSingleStep(double)
+void InputField::setSingleStep(double s)
 {
-
+    StepSize = s;
 }
 
 /// get the value of the maximum property
 double InputField::maximum(void)const
 {
-    return 0.0;
+    return Maximum;
 }
 
 /// set the value of the maximum property 
-void InputField::setMaximum(double)
+void InputField::setMaximum(double m)
 {
-
+    Maximum = m;
 }
 
 /// get the value of the minimum property
 double InputField::minimum(void)const
 {
-    return 0.0;
+    return Minimum;
 }
 
 /// set the value of the minimum property 
-void InputField::setMinimum(double)
+void InputField::setMinimum(double m)
 {
-
+    Minimum = m;
 }
 
 
diff --git a/src/Gui/InputField.h b/src/Gui/InputField.h
index f0274028f..8ac314a6e 100644
--- a/src/Gui/InputField.h
+++ b/src/Gui/InputField.h
@@ -128,6 +128,10 @@ private:
 
   Base::Quantity actQuantity;
   Base::Unit     actUnit;
+
+  double Maximum;
+  double Minimum;
+  double StepSize;
 };