caption: pressure indicator for pressure control
exif: {"Image Artist": "Admin", "Image ExifOffset": "2128", "Image XPAuthor": "", "Image Padding": "[]", "EXIF DateTimeOriginal": "2015:04:18 17:01:52", "EXIF DateTimeDigitized": "2015:04:18 17:01:52", "EXIF SubSecTimeOriginal": "63", "EXIF SubSecTimeDigitized": "63", "EXIF Padding": "[]"}