Timely question James, as I'm sitting here working on a proforma for potential expansion.:)
I'm not sure that in our industry we can track every single nut and bolt. I know I would spend all of my time trackin' and less wreckin'. I use some Excel sheets that I came up with in house to track all of our expenditures and I have a good accountant who keeps me honest. It's fairly easy for me being a smaller contractor to keep up with inventory, but I know it can become a nightmare for the larger demo firms.