08 Dec 2011, 23:40
This sounds like the trimmer on the front of P2 and P3 Pulsar modules. They are 6.5mm across the leads. The manufacturer, Johanson, is still in business, and this particular trimmer is still in production. Visit their website and I am sure you will find what you need (and of course, these can be salvaged from most any dead P2 or P3 module; plenty of those still out there, too). The smaller, cylindrical trimmer on the back of the modules has been discontinued, so scrap modules will be the only source of those.