Pennsylvania-Maryland Tie (PA)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by USGS
Date flown 11/66
Line spacing 0.8 (km)
Altitude 152.4 (m) above ground
Total distance 1,352 (km)
References
Counties Baltimore - Cecil - Harford - Chester - Lancaster - York
Overlapping surveys

Data: Magnetic (M-Dz)