AZUnsolved created an ArcGIS to aid Zodiac theorists in deciphering the Z32 cipher using the “radians and number of inches along the radians” clue as well as the “set 0 to Mag N” clue on the map. It includes the killer’s map overlaying a foundation map, an early 1960s topographic map, location of the crime scenes, standard radians, clockwise radians, unit circle radians, inches, half inches, quarter inches, and quadrant divisions, all set to Magnetic North.
Happy solving!
Link to full version:
https://www.arcgis.com/apps/mapviewer/index.html?webmap=cdd970982b764a4fae7e351c8905973f
Tip: The Layers Panel
Navigate to the layers panel to switch on and off the various layers. This can be done by clicking the eye icon to the right of the layer.
