diff --git a/GUI/Model/Descriptor/DoubleProperty.h b/GUI/Model/Descriptor/DoubleProperty.h
index 07f84d2ae20d97412aada8a4eb9a4962e23648b8..fe4aa0af2b3c44d34b57d452d443baa091dffdf4 100644
--- a/GUI/Model/Descriptor/DoubleProperty.h
+++ b/GUI/Model/Descriptor/DoubleProperty.h
@@ -16,7 +16,6 @@
 #define BORNAGAIN_GUI_MODEL_DESCRIPTOR_DOUBLEPROPERTY_H
 
 #include "Fit/Param/RealLimits.h"
-#include "GUI/Support/Type/Unit.h"
 #include <QList>
 #include <QString>
 #include <QXmlStreamReader>
@@ -41,7 +40,6 @@ public:
     void init(const QString& label, const QString& tooltip, double value, uint decimals,
               double step, const RealLimits& limits, const QString& uidPrefix);
 
-
     //! Cast to the contained double value.
     operator double() const { return m_value; }
 
@@ -61,8 +59,6 @@ public:
     QString tooltip() const { return m_tooltip; }
     void setTooltip(const QString& tooltip);
 
-    std::variant<QString, Unit> unit() const { return m_unit; }
-
     RealLimits limits() const { return m_limits; }
     void setLimits(const RealLimits& limits);
 
@@ -84,8 +80,6 @@ private:
     uint m_decimals = 3;  //!< numbers of decimals to be shown in an edit control
     double m_step = 0.01; //!< numbers of decimals to be shown in an edit control
     RealLimits m_limits;  //!< Limits of the value.
-    static constexpr std::variant<QString, Unit> m_unit =
-        Unit::unitless; //!< Unit of the value (internal unit only!)
 };
 
 using DoubleProperties = QList<DoubleProperty*>;
diff --git a/GUI/Support/Type/Unit.h b/GUI/Support/Type/Unit.h
deleted file mode 100644
index 6786418ec61b0edf34d34b420a74ffbe279dcab3..0000000000000000000000000000000000000000
--- a/GUI/Support/Type/Unit.h
+++ /dev/null
@@ -1,39 +0,0 @@
-//  ************************************************************************************************
-//
-//  BornAgain: simulate and fit reflection and scattering
-//
-//! @file      GUI/Support/Type/Unit.h
-//! @brief     Defines class Unit
-//!
-//! @homepage  http://www.bornagainproject.org
-//! @license   GNU General Public License v3 or higher (see COPYING)
-//! @copyright Forschungszentrum Jülich GmbH 2021
-//! @authors   Scientific Computing Group at MLZ (see CITATION, AUTHORS)
-//
-//  ************************************************************************************************
-
-#ifndef BORNAGAIN_GUI_SUPPORT_TYPE_UNIT_H
-#define BORNAGAIN_GUI_SUPPORT_TYPE_UNIT_H
-
-class QString;
-
-//! Defines units, mainly to be able to convert between units.
-//!
-//! E.g. internal unit is nanometer, displayed unit is angstrom.
-//! Units which do not support conversion do not have to be
-//! part of the enum, since the relevant code parts support defining a
-//! unit via enum or via string
-enum class Unit {
-    unitless,
-    nanometer,
-    nanometer2,
-    nanometerMinus2,
-    angstrom,
-    angstrom2,
-    angstromMinus2,
-    degree,
-    radiant,
-    other //!< The unit has no enum value defined in here (e.g. when defined as an explicit string)
-};
-
-#endif // BORNAGAIN_GUI_SUPPORT_TYPE_UNIT_H
diff --git a/GUI/View/Numeric/DoubleSpinBox.cpp b/GUI/View/Numeric/DoubleSpinBox.cpp
index 02bd82560b31578d672b8a160b9fc5ce72cfe586..06adcfb81c1e1c4c27f5f26fe497982411643ca7 100644
--- a/GUI/View/Numeric/DoubleSpinBox.cpp
+++ b/GUI/View/Numeric/DoubleSpinBox.cpp
@@ -66,16 +66,8 @@ void DoubleSpinBox::onDisplayValueChanged(double value)
     emit baseValueChanged(value);
 }
 
-Unit DoubleSpinBox::baseUnit() const
-{
-    if (std::holds_alternative<QString>(m_valueProperty.unit()))
-        return Unit::other;
-
-    return std::get<Unit>(m_valueProperty.unit());
-}
-
 void DoubleSpinBox::updateValue()
 {
-    QSignalBlocker b(this);
+    QSignalBlocker _(this);
     setBaseValue(m_valueProperty.value());
 }
diff --git a/GUI/View/Numeric/DoubleSpinBox.h b/GUI/View/Numeric/DoubleSpinBox.h
index 525d53d02f934f9fb38a4690f11eaaba5dca5fc9..30f8a4bd00b3422a212f842fdc74f0263c3170a3 100644
--- a/GUI/View/Numeric/DoubleSpinBox.h
+++ b/GUI/View/Numeric/DoubleSpinBox.h
@@ -29,18 +29,11 @@ public:
     //! unnoticed changes would take place when just scrolling through the form.
     DoubleSpinBox(DoubleProperty& d, bool easyScrollable = false, QWidget* parent = nullptr);
 
-    //! Set the base value (unit is the one of the contained descriptor).
+    //! Set the value
     void setBaseValue(double baseValue);
-
-    QString uid() const;
-
     void setPropertyValue(double v);
 
-    //! Returns the unit of the contained DoubleProperty.
-    //!
-    //! If the unit is defined as a string, this method returns Unit::other. To get the string, use
-    //! valueProperty().unit
-    Unit baseUnit() const;
+    QString uid() const;
 
     //! Update the shown value to the one contained in the value descriptor.
     //!
diff --git a/GUI/View/Numeric/NumWidgetUtil.cpp b/GUI/View/Numeric/NumWidgetUtil.cpp
index 696c8fe02d4ae012bb526c2d01513ce26b719633..be2370a923323175661bb51e4c1924668ab61b4b 100644
--- a/GUI/View/Numeric/NumWidgetUtil.cpp
+++ b/GUI/View/Numeric/NumWidgetUtil.cpp
@@ -13,7 +13,6 @@
 //  ************************************************************************************************
 
 #include "GUI/View/Numeric/NumWidgetUtil.h"
-#include "GUI/Support/Type/Unit.h"
 #include "GUI/Support/Util/CustomEventFilters.h"
 #include "GUI/View/Numeric/DoubleSpinBox.h"
 #include "GUI/View/Numeric/NumberUtil.h"