diff --git a/GUI/View/Numeric/DoubleLineEdit.cpp b/GUI/View/Numeric/DoubleLineEdit.cpp
deleted file mode 100644
index 26dcea58d8a37cb963551e2253df8670c5d2cc27..0000000000000000000000000000000000000000
--- a/GUI/View/Numeric/DoubleLineEdit.cpp
+++ /dev/null
@@ -1,52 +0,0 @@
-//  ************************************************************************************************
-//
-//  BornAgain: simulate and fit reflection and scattering
-//
-//! @file      GUI/View/Numeric/DoubleLineEdit.cpp
-//! @brief     Implements class DoubleLineEdit.
-//!
-//! @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)
-//
-//  ************************************************************************************************
-
-#include "GUI/View/Numeric/DoubleLineEdit.h"
-
-DoubleLineEdit::DoubleLineEdit(QWidget* parent, const DoubleProperty& d)
-    : QLineEdit(parent)
-    , m_validator(new QDoubleValidator(0.0, 1e200, 1000, this))
-    , m_valueProperty(d)
-{
-    m_validator->setNotation(QDoubleValidator::ScientificNotation);
-    const double minimum =
-        d.limits().hasLowerLimit() ? std::max(d.limits().lowerLimit(), -1e200) : -1e200;
-    const double maximum =
-        d.limits().hasUpperLimit() ? std::min(d.limits().upperLimit(), +1e200) : +1e200;
-    m_validator->setRange(minimum, maximum, 1000);
-    setValidator(m_validator);
-
-    setToolTip(d.tooltip());
-
-    updateBaseValue();
-
-    connect(this, &QLineEdit::editingFinished, this, &DoubleLineEdit::onEditingFinished);
-}
-
-void DoubleLineEdit::setBaseValue(double value)
-{
-    setText(QString::number(value, 'g'));
-}
-
-void DoubleLineEdit::updateBaseValue()
-{
-    setBaseValue(m_valueProperty.value());
-}
-
-void DoubleLineEdit::onEditingFinished()
-{
-    const double new_value = text().toDouble();
-    if (new_value != m_valueProperty.value())
-        emit baseValueChanged(new_value);
-}
diff --git a/GUI/View/Numeric/DoubleLineEdit.h b/GUI/View/Numeric/DoubleLineEdit.h
deleted file mode 100644
index fd612a7bb8ebf3e356db3acad56449ab0b85e14b..0000000000000000000000000000000000000000
--- a/GUI/View/Numeric/DoubleLineEdit.h
+++ /dev/null
@@ -1,50 +0,0 @@
-//  ************************************************************************************************
-//
-//  BornAgain: simulate and fit reflection and scattering
-//
-//! @file      GUI/View/Numeric/DoubleLineEdit.h
-//! @brief     Defines class DoubleLineEdit.
-//!
-//! @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_VIEW_NUMERIC_DOUBLELINEEDIT_H
-#define BORNAGAIN_GUI_VIEW_NUMERIC_DOUBLELINEEDIT_H
-
-#include "GUI/Model/Descriptor/DoubleProperty.h"
-#include <QDoubleValidator>
-#include <QLineEdit>
-
-//! LineEdit to edit values in a scientific notation, operating on a DoubleProperty.
-//!
-//! In the future it can be enhanced to support units. At the moment, no DoubleProperty with units
-//! is used with a DoubleLineEdit, therefore the handling of units is not implemented yet. Only the
-//! naming is prepared already (also to have a naming alike to DoubleSpinBox).
-class DoubleLineEdit : public QLineEdit {
-    Q_OBJECT
-public:
-    DoubleLineEdit(QWidget* parent, const DoubleProperty& d);
-
-    //! Set the base value (unit is the one of the contained descriptor).
-    void setBaseValue(double value);
-
-    void updateBaseValue();
-
-signals:
-    //! Emitted whenever the value changes.
-    void baseValueChanged(double value);
-
-private slots:
-    void onEditingFinished();
-
-private:
-    QDoubleValidator* m_validator;
-    const DoubleProperty& m_valueProperty;
-};
-
-
-#endif // BORNAGAIN_GUI_VIEW_NUMERIC_DOUBLELINEEDIT_H
diff --git a/GUI/View/Sample/MaterialInplaceForm.cpp b/GUI/View/Sample/MaterialInplaceForm.cpp
index 74835f1a7fc20914d0ebce23a1027967c02deb96..368de35d651c7f32af9dc85b980c9e095ab8533d 100644
--- a/GUI/View/Sample/MaterialInplaceForm.cpp
+++ b/GUI/View/Sample/MaterialInplaceForm.cpp
@@ -21,7 +21,6 @@
 #include "GUI/Model/Sample/SampleItem.h"
 #include "GUI/Support/XML/Backup.h"
 #include "GUI/View/MaterialEditor/MaterialEditorDialog.h"
-#include "GUI/View/Numeric/DoubleLineEdit.h"
 #include "GUI/View/Numeric/DoubleSpinBox.h"
 #include "GUI/View/Sample/LayerEditorUtil.h"
 #include "GUI/View/Sample/SampleEditorController.h"
@@ -54,10 +53,6 @@ void MaterialInplaceForm::updateValues()
         QSignalBlocker b(editor);
         editor->updateValue();
     }
-    for (auto* editor : findChildren<DoubleLineEdit*>()) {
-        QSignalBlocker b(editor);
-        editor->updateBaseValue();
-    }
 }
 
 void MaterialInplaceForm::selectMaterial()
@@ -98,11 +93,11 @@ void MaterialInplaceForm::createWidgets()
 
     int col = 0;
     for (DoubleProperty* d : values) {
-        auto* editor = new DoubleLineEdit(this, *d);
+        auto* editor = new DoubleSpinBox(*d);
         auto* label = new QLabel(d->label(), this);
         label->setBuddy(editor);
 
-        QObject::connect(editor, &DoubleLineEdit::baseValueChanged, [this, d](double newValue) {
+        QObject::connect(editor, &DoubleSpinBox::valueChanged, [this, d](double newValue) {
             m_ec->setMaterialValue(m_item, newValue, *d);
         });