Post would be a good deal more convincing with a couple of links to sites showing the meaning of the symbol as used on maps.
I’ve used all kinds of maps for half a century and it’s not one I’m familiar with.
The only place I’ve found it on line is as a symbol used to show where surveyors should place themselves while working around traffic.
IOW, it’s a symbol for a surveyor, which doesn’t make a whole lot of sense in Sarah’s graphic. OTOH, it’s pretty obviously not crosshairs.
If anybody has other examples of its use, I’d like to see it.
I used to work helping an engineering team make maps with transparant overlays for filing cellular tower applications with the FCC. Before we switched to digital mapping with computers and GIS software, we’d use plotter printed vellum overlayed on various scales of USGS maps.
We used the “crosshair” symbol as a marker for existing and proposed cell towers.
Scroll down on the right side for “principle point” map symbol...
http://www.mapcenter.com/?section=usgs_map_symbols
Sorry...that should be spelled “principal point”.