values for spin bars adjusted: scale and pen size

Author: Amirreza Baghbanpourasl

src/main_window.ui

@@ -186,13 +186,13 @@
          <item>
           <widget class="QDoubleSpinBox" name="spinbox_scale">
            <property name="minimum">
-            <double>0.050000000000000</double>
+            <double>0.500000000000000</double>
            </property>
            <property name="maximum">
             <double>8.000000000000000</double>
            </property>
            <property name="singleStep">
-            <double>0.050000000000000</double>
+            <double>0.500000000000000</double>
            </property>
            <property name="value">
             <double>1.000000000000000</double>
@@ -216,7 +216,7 @@
             <number>0</number>
            </property>
            <property name="singleStep">
-            <number>5</number>
+            <number>1</number>
            </property>
            <property name="value">
             <number>30</number>