The following is a schematic diagram (Figure 37) of what is considered one of the best overall models. It is among the best construction for all of the tool's uses. The diagram can be a good visual aid to use during construction. It shows the optional roof, dust bag arm, riser hinge, and wheel assist runner. The general design can be altered to suit the home shop builder, as long as the basic functions of the tool are not compromised. Precise measures for building the tool are not presented, and there is reason for that. Most on-farm or ranch builders choose to decide on their own final model and to use materials on hand. These builders generally measure, cut, fit and attach the parts together as they build the tool. Precise measures are not needed for our intended purposes herein.

Figure 37. Schematic diagram of a portable two-compartment salt/mineral feeder and cattle rub tool with optional rain shield, dust bag and full-length runner components (see Figure 1 and 38 for short runner model).