Western Maine (ME)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by Aero Service Corporation
Date flown 05/48
Line spacing 3.2 (km)
Altitude 304.8 (m) above ground
Total distance 1,931 (km)
References
Counties Piscataquis - Somerset
Overlapping surveys

Data: Magnetic (M-Dz)