Mode of affixing Proof Marks.U.K.
On Arms of the First, Third, and Fifth Classes the definitive Proof Mark and View Mark shall be impressed at the Breech End of the Barrel, and if the Barrel be constructed with a Patent Breech or with Revolving Cylinders or Chambers the View Mark shall be also impressed upon the Breech, or upon every Cylinder or Chamber, if more than One, with which the Barrel is connected.
On Arms of the Second and Fourth Classes proved provisionally and definitively the provisional Proof Mark shall be impressed at the Breech End of the Barrel, and the definitive Proof Mark and View Mark shall be impressed upon the Barrel above the provisional Proof Mark; and if the Barrel be constructed with a Patent Breech, or with a Breech-loading Action, or with Breech Blocks or Chambers, the View Mark shall be also impressed upon the Breech or Breech-loading Action, or upon each of the Breech Blocks or Chambers, if more than One, with which the Barrel is connected.
On Arms of the Second and Fourth Classes proved provisionally in the State for definitive Proof the Proof Mark shall be impressed at the Breech End of the Barrel, and if the Barrel be constructed with a Patent Breech, or with a Breech-loading Action, or with Breech Blocks or Chambers, shall be also impressed upon the Breech or Breech-loading Action, or upon each of the Breech Blocks or Chambers, if more than One, with which the Barrel is connected.
On all Barrels the Gauge Size of the Barrel shall be struck at the definitive Proof.
