diff --git a/serial_plotter.py b/serial_plotter.py
index cfe68f0..8681c53 100644
--- a/serial_plotter.py
+++ b/serial_plotter.py
@@ -20,6 +20,7 @@ class SerialPlotter:
         self.settings = json.load(open('settings.json', 'r'))
         self.sensors = len(self.settings['sensor_ports'])
         self.windowsize = self.settings['winSize']
+        self.fontSize = self.settings['fontSize']
         self.delay = self.settings["delay"] / 1000
 
         self.colors = ['blue', 'orange', 'green', 'yellow']
@@ -79,19 +80,19 @@ class SerialPlotter:
                                   label=f'sensor {i + 1}, latest: {np.format_float_scientific(self.sensorsData[i][-1], precision = 2)} $\Omega$')
                     
                     # Make the font size of values placed on x-axis and y-aixs equal to 16 (large enough)
-                    plt.xticks(fontsize = 16)
-                    plt.yticks(fontsize = 16)
+                    plt.xticks(fontsize = max(self.fontSize, 10))
+                    plt.yticks(fontsize = max(self.fontSize, 10))
                     
                     # make the label of two axes large enough
-                    self.axs.set_xlabel('Time (seconds)', fontsize = 15)
-                    self.axs.set_ylabel(u'Resistance ($\Omega$)', fontsize = 15)
+                    self.axs.set_xlabel('Time (seconds)', fontsize = max(self.fontSize, 10))
+                    self.axs.set_ylabel(u'Resistance ($\Omega$)', fontsize = max(self.fontSize, 10))
                     i += 1
             self.timeElapsed += 1  # increment time
 
             # Acknowledgement: https://stackoverflow.com/a/13589144
             handles, labels = self.axs.get_legend_handles_labels()
             by_label = dict(zip(labels, handles))
-            self.axs.legend(by_label.values(), by_label.keys(), loc='best', fontsize = 15) # Make the legend on graph large enough
+            self.axs.legend(by_label.values(), by_label.keys(), loc='best', fontsize = max(self.fontSize, 10)) # Make the legend on graph large enough
         except:
             traceback.print_exc()
 
diff --git a/test.py b/test.py
index d764216..63bbc7b 100644
--- a/test.py
+++ b/test.py
@@ -33,6 +33,7 @@ def main():
     port = frame.dev_list.GetValue()
     # typical window size: 50
     window_size = int(frame.m_textCtrl26.GetValue())
+    font_size = int(frame.fontSize.GetValue())
 
     #################### END USER INPUTS ########################
 
@@ -46,10 +47,10 @@ def main():
     if not (len(resistors) == 5):
         raise ValueError(f"expecting 5 resistor values, but got {len(resistors)}!!!")
 
-    gen_settings(resistors, input_voltage, port, filename, window_size, delay)
+    gen_settings(resistors, input_voltage, port, filename, window_size, font_size, delay)
 
 
-def gen_settings(resistors, input_voltage, port, filename, window_size, delay):
+def gen_settings(resistors, input_voltage, port, filename, window_size, font_size, delay):
     """
 	export all inputs from main() to a .json file
 	:param resistors: list of reference resistances of the sensors
@@ -68,6 +69,7 @@ def gen_settings(resistors, input_voltage, port, filename, window_size, delay):
     settings["port"] = port
     # settings["resolution"] = bits
     settings["winSize"] = window_size
+    settings["fontSize"] = font_size
     settings["file_name"] = filename
     settings["delay"] = delay
     open(name, 'w').write(json.dumps(settings, indent=4))