Stamp Perforation Gauge

Invalid date

Added the United States to the list of known varieties (Fourth Bureau Issue 1922-1931, Postage Due Stamps and Special Delivery Stamps).

Fixed a bug that was reported by a user. The bug was a crash while using the camera. I can not reproduce the crash, but hopefully it is fixed.

Added a What's New.

Added an email button to the Info and What's New.

Send me an email if this version is not working properly or if you want a country added to the varieties list.