A basic Meter chart

[No canvas support]

This goes in the documents header: 
<script src="RGraph.common.core.js"></script>
<script src="RGraph.meter.js"></script>
Put this where you want the chart to show up: 
<canvas id="cvs" width="600" height="300">
    [No canvas support]
</canvas>
This is the code that generates the chart: 
<script>
    window.onload = function ()
    {
        var meter = new RGraph.Meter({
            id: 'cvs',
            min: 50,
            max: 100,
            value:60,
            options: {
                unitsPost: 'k',
                redStart: 85,
                redEnd: 100,
                yellowStart: 65,
                yellowEnd: 85,
                greenStart: 50,
                greenEnd: 65,
                textAccessible: false
            }
        }).draw();
    };
</script>