tactile map point symbols crosshairs
thingiverse
A Series of Crosshair Point Symbols from Rener (1993) Tactile Cartography: A New Perspective on Tactile Cartographic Symbols, The Cartographic Journal, 30:2, 195-198. One of the five point symbols identified by Rener in at least two studies as highly readable for individuals with visual impairments is a shape featuring a rounded top surface.
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