use the plastic that you punch the disk out of for a jig make the hole bigger so the disk and the brass ring will fit in side itthen super glue the back of it.then find a rod the size of the outside dia and wrap copper wire around it cut the wire down the centertomake wire hoops this is your brazalfor your gauge

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[/IMG]glue the hoop onto the gauge body punch out the glass {clear plastic}the same size as the diskand super glue it on

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[/IMG]then your done then uncross your eyes lol