I'm running the following command with the extra argument -n to extract the real exif data (I want the integer value for the orientation tag).

Exiftool.new('some-image-file.jpg,'-n').to_hash

I see some warnings for both the 'GPSLatitude' & 'GPSLongitude':
:gps_latitude=>"Warning: Parsing '52.7353472222222' for attribute 'GPSLatitude' raised undefined methodsplit' for 52.7353472222222:Float"`

added an image for any testing: