[jerryhawthorne]

OR, put your meter on the ohms scale and set it for the lowest resistance range. Place the leads across the tabs sticking up in your picture, one on each side of one of the trimmer cap. You should have a low resistance reading. Now go to the other trimmer cap and repeat, hopefully with the same results of a low reading. A high reading (probably in the megaohm range will indicate an open coil. Make sense?
Best, Jerry