The universal chrome mounting design allows for trick mounting on virtually any windshield.   The mounting bar accepts any 1/4" bolt or screw on the shield (or anywhere else on the motorcycle for that matter)

Any Bolt-On Gauge will allow mounting to windshield Acorn Nuts, Switch Housing Screws or with optional Handle Bar (HC) mount, directly to you handlebars.  Also shown in the picture is the Raise-It bracket for the bag, Switch Mounted EL Thermometer, Trigger on the handlebars and a Road King Fork Lock Clock.
 

The gauges are 1.55" in diameter, waterproof and shock resistant mounted on full chrome and stainless steel hardware, i.e. cool to look at and no rust!Use your imagination - pick any bolt or screw, hang the gauge and your done!