Adventure Terrain have released a set of 28mm Dug-in Markers.
From their announcement:
Adventure Terrain is proud to present our 28mm dug-in markers (they fit up to 30mm bases). These are stands for a skirmish game where you want that little extra on the gaming table. No need for a chit to say the figures are dug-in, just put them in these bases and they will look great on the board.
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