The wheellock is easily recognized by the prominent wheel cover on the lock face
and the "dogshead" or "cock" arm appearing backwards compared to those on the later flintlock.
The lock combinations could be remotely changed, and the lock face
was made of weather-resistant metal plating.
The difference in the cross-section rectangles between the front portion of the carrier and the back portion of the carrier creates the lock face
When the lock face
is pushed in, a pin on the back of the lock protrudes and locks the two doors.
A nice feature is the small light that illuminates the lock face
for night-time operation.
The lock faces
a race to be fit for the Guinness Pro12 encounter with Ulster in Swansea on Saturday but there is a fair chance he will be good to play a part against the Scarlets in Llanelli a week later.
The giant lock faces
stiff competition if he is to fulfil his international ambitions, as England currently have their strongest pool of locks for the last 40 years.
Luke Charteris 8 v Jake Ball 8 The Perpignan lock faces
a royal battle against Scarlets' second-row cult hero Ball who made his debut in this season's Six Nations.
Jimmy Carr hosts proceedings, and Sean Lock faces
Jon Richardson in a rematch of the original encounter.
The official said the device will be used as an emergency entry tool to quickly and safely shear through security bars, bolts and pins and cut through lock faces
, destroy padlocks and deadbolts and breach through locked doors, without creating flying projectiles.
The England lock faces
World Cup heartbreak after being ruled out of rugby until September 15 for punching Clermont Auvergne lock Thibault Privat during the European Challenge Cup Final.
Take note of the direction the striker lock faces
for later reassembly.