diff --git a/arty.pyw b/arty.pyw
new file mode 100644
index 0000000..3823d94
--- /dev/null
+++ b/arty.pyw
@@ -0,0 +1,125 @@
+import sys
+import winput
+from PySide2.QtCore import Qt
+from PySide2.QtWidgets import QApplication, QMainWindow, QRadioButton, QGroupBox
+from PySide2.QtWidgets import QVBoxLayout, QHBoxLayout, QWidget, QLabel, QSpinBox
+from PySide2.QtWidgets import QAction
+from PySide2.QtGui import QIcon
+
+WM_MOUSEWHEEL = 0x020A # mouse wheel moved
+
+class ArtyWidget(QWidget):
+
+    def __init__(self, parent=None):
+        super().__init__(parent)
+
+        self.radio_type1 = QRadioButton("Type 1: MILRAD 622 - 978")
+        self.radio_type2 = QRadioButton("Type 2: MILRAD 800 - 1120")
+
+        gbox_layout = QVBoxLayout()
+        gbox_layout.addWidget(self.radio_type1)
+        gbox_layout.addWidget(self.radio_type2)
+
+        self.gbox = QGroupBox("Settings (Ctrl+H to hide the window bar)")
+        self.gbox.setLayout(gbox_layout)
+
+        self.target_range = QSpinBox()
+        self.target_range.setMinimum(100)
+        self.target_range.setMaximum(1600)
+        self.elevation = QSpinBox()
+        self.elevation.setReadOnly(True)
+        
+        font = self.elevation.font()
+        font.setPointSize(14)
+        self.target_range.setFont(font)
+        self.elevation.setFont(font)
+
+        self.radio_type1.toggled.connect(self.toggle_type)
+        self.radio_type1.setChecked(True)
+        self.target_range.valueChanged.connect(self.update_elevation)
+
+        layout = QHBoxLayout()
+        layout.addWidget(QLabel("Range:"))
+        layout.addWidget(self.target_range)
+        layout.addWidget(QLabel("Elevation:"))
+        layout.addWidget(self.elevation)
+
+        main_layout = QVBoxLayout()
+        main_layout.addWidget(self.gbox)
+        main_layout.addLayout(layout)
+
+        self.setLayout(main_layout)
+
+    def toggle_type(self):
+        if self.radio_type1.isChecked():
+            self.elevation.setMinimum(622)
+            self.elevation.setMaximum(978)
+        else:
+            self.elevation.setMinimum(800)
+            self.elevation.setMaximum(1120)
+
+        self.update_elevation(self.target_range.value())
+
+    def update_elevation(self, value):
+        x0, x1 = 100, 1600
+        if self.radio_type1.isChecked():
+            y0, y1 = 978, 622
+        else:
+            y0, y1 = 1120, 800
+
+        elevation = round(self.interpolator(value, x0, x1, y0, y1))
+        self.elevation.setValue(elevation)
+
+    def interpolator(self, x, x0, x1, y0, y1):
+        return y0 + (y1 - y0) * (x - x0) / (x1 - x0)
+
+    def increment_range(self, mouse_event):
+        if mouse_event.action == WM_MOUSEWHEEL:
+            if not self.isActiveWindow():
+                current_range = self.target_range.value()
+                increment = mouse_event.additional_data
+                self.target_range.setValue(current_range + increment)
+
+
+class ArtyGUI(QMainWindow):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.arty_widget = ArtyWidget(self)
+
+        self.setCentralWidget(self.arty_widget)
+        self.setWindowTitle("Arty")
+        self.setWindowIcon(QIcon("icon.png"))
+        self.setWindowFlag(Qt.WindowStaysOnTopHint)
+        self.resize(150, 20)
+
+        self.hideBarAction = QAction('&Hide Window Bar', self)
+        self.hideBarAction.setShortcut('Ctrl+H')
+        self.hideBarAction.triggered.connect(self.hide_bar)
+        self.addAction(self.hideBarAction)
+
+        self.quitAction = QAction('&Quit', self)
+        self.quitAction.setShortcut('Ctrl+Q')
+        self.quitAction.triggered.connect(qApp.quit)
+        self.addAction(self.quitAction)
+
+        self.arty_widget.target_range.setFocus()
+
+    def hide_bar(self):
+        self.setWindowFlag(Qt.FramelessWindowHint)
+        self.arty_widget.gbox.setTitle("Settings (Ctrl+Q to quit)")
+        self.show()
+        self.arty_widget.target_range.setFocus()
+
+    def wheelEvent(self, event):
+        self.arty_widget.target_range.event(event)
+
+
+if __name__ == "__main__":
+    app = QApplication(sys.argv)
+
+    arty_gui = ArtyGUI()
+    arty_gui.show()
+
+    winput.hook_mouse(arty_gui.arty_widget.increment_range)
+
+    sys.exit(app.exec_())
diff --git a/icon.png b/icon.png
new file mode 100644
index 0000000..0c9f7eb
Binary files /dev/null and b/icon.png differ