Up/Down

Using a hand-held GPS receiver (pre-smartphone), I found the four "corners" of Downtown Boston based on the exact locations that had even latitude and longitude minutes (meaning no seconds). Then I photographed the sky directly above and made a charcoal rubbing of the land, creating a vertical diptych, making an abstract number tangible.

• 42°22'00.0"N 71°04'00.0"W

• 42°22'00.0"N 71°03'00.0"W

• 42°21'00.0"N 71°04'00.0"W

• 42°21'00.0"N 71°03'00.0"W