setLayout(main);
setMinimumSize(new Dimension(600, 200));
JPanel instruments = new JPanel();
instruments.setMinimumSize(new Dimension(600, 200));
instruments.setLayout(new BoxLayout(instruments, BoxLayout.X_AXIS));
compass = new AirCompass();
compass.setSize(SIZE);
instruments.add(compass);
// Altimeter
altimeter = new Altimeter();
altimeter.setSize(SIZE);