Stud Pattern PCD Gauge - Measures Hole SpacesStud Pattern PCD Gauge Measures Hole Spaces This listing is for a Stud Pattern PCD Gauge. We guarantee that you can find the correct stud pattern of your wheels by using this gauge. Essential equipment for any garage or wheel dealer! This clever little device will easily and quickly show the correct pcd. It can measure the hole spacing of wheels or the stud spacing of the hubs simply fit the lugs into the holes and read off the spacing on the