Playing Triumph! sometimes requires determining whether a stand is within one base width of the front of an enemy stand: the Zone of Control (ZOC).
Having a tool that aids quick measurement of the ZOC extending out from enemy troops facilitates play. It also provides an opportunity for fun modeling.
Following are some examples of ZOCinators I've made.
No idea who makes this model, but it is a great ZOCinator for the Biblical period.
JR Miniatures.
The flat-topped tower is more common in France, England, Spain, etc.
JR Miniatures
The steep roof, tiled in ceramic or (as here) slate, is typical of the Germanies, Bohemia, Hungary, Poland, the Teutonic Order, and so on.
The Olmec are a Preclassic culture in Mesoamerica about which we know fairly little. They left distinctive large round stone head carvings. I found a model of one to use as the basis for this ZOCinator, appropriate for most Mesoamerican armies.