a1.setLabelInfo(info);
        assertFalse(a1.equals(a2));
        a2.setLabelInfo(info);
        assertTrue(a1.equals(a2));
        
        a1.setMajorTickTimePeriodClass(Minute.class);
        assertFalse(a1.equals(a2));
        a2.setMajorTickTimePeriodClass(Minute.class);
        assertTrue(a1.equals(a2));