needleBig.layer.anchorPoint=CGPointMake(0.5f, 0.5f);

    [UIView animateWithDuration:0.4f
                          delay:0.01f
                        options:UIViewAnimationOptionCurveEaseOut
                     animations:^{
                        CGAffineTransform rotate = CGAffineTransformMakeRotation(180.0f * (M_PI / 180.0f));
                        [needleBig setTransform:rotate];

                     }
                     completion:^(BOOL finished){


                     }];