Edit in JSFiddle

var control = $('#control').bendGauge();

control.bendGauge('set', [1,3,5,6]);

$('a').click(function (e) {
    e.preventDefault();
});

$('.rotateCw').click(function () {
    control.bendGauge('rotate', 2);
});

$('.rotateCcw').click(function () {
    control.bendGauge('rotate', -2);
});

<div id="control"></div>
<a href="#" class="rotateCw">rotate clockwise by two bends</a> ::
<a href="#" class="rotateCcw">rotate counter clockwise by two bends</a>

body {
    background: #333;
}
a {
    color:#FFF
}
#control {
    width: 200px;
    height: 200px;
}