ZODIAC - Do you like my buttons - Survey benchmark


The cross and the circle are common symbols in survey, Zodiacs circle cross sits over the Mt Diablo mountain cairn.  It sits on the Diablo meridian and baseline that the Phillips 66 map is derived from.

I believe knew the origins of the Devil mountain meridian and baseline that created the map which means he had knowledge of surveying and it's underlying derivatives.

Is this one of Zodiacs buttons The Zodiac Killer refers? Do you like my buttons?


https://www.pinterest.com.au/sebdav24/surveying/?lp=true

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