From Perpetuum Software:
Perfect Widgets for Windows 8 is a set of HTML5 Gauges for WinRT Based Apps. It contains over 150 standard pre-designed gauges: thermometers, tanks, LEDs, digits, knobs, odometers and 20 Windows 8 styled gauges. All are completely customizable gauges and it has the ability to create gauge from scratch. You can set even the most complex behavior in short scripts and bindings and integrate into Windows 8 applications with few mouse clicks.