Ever wonder just how much feed you're putting out through a pickup-mounted cube feeder? Most commercially manufactured feeders don't provide a measuring device, so Rod Peppel, manager of the 3/B Ranch, Quapaw, Okla., invented one. First he determined that every revolution of the cog on his electric-motor-powered and chain-driven feeder delivers six pounds of feed. Next he welded a hinged, flat piece of metal to the cake feeder next to the cog, and attached a spring to hold it down. Then he welded a rod to the cog making sure it extended past the cog far enough to catch on the spring-loaded metal. Each time the cog revolves it hits the metal and makes a "click" loud enough to be heard inside the pickup. Each "click" represents six pounds of feed.