Edit in JSFiddle

Result
JavaScript
HTML
CSS

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

$('.exec').click(function(e){
    e.preventDefault();
    control.val($(this).data('val'));
});

<div id="control"></div>
<a href="#" data-val="10" class="exec">set value to 10</a> :: <a href="#" class="exec" data-val="0">set value to 0</a>

body{
    background: #333;
}

a{color:#FFF}

#control{
    width: 200px;
    height: 200px;
}