s2 = new StandardDialScale(10.0, 200.0, 0.0, 270.0, 10.0, 4);
        assertTrue(s1.equals(s2));
        
        // startAngle
        s1 = new StandardDialScale(10.0, 200.0, 20.0, 270.0, 10.0, 4);
        assertFalse(s1.equals(s2));