Corona Calibration markers
- Ramon C Purcell
- 22 hours ago
- 1 min read
Checking out one of the Corona Calibration markers along I-10 #boneyardsafari #aviationsafari #aviationpreservation #aviationadventures
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there is a really big eye chart in Sierra Vista, it's off the east end of the airport main runway Lat long is 31°35'46"N 110°18'28"W. used for the same purpose, built in the early 70s. it's still there !