B.R.M. Watches T12 Drivemaster. Yet again BRM watches displays definite, evergrowing racing spirit and meticulous attention to detail. This watch echoes the venturi shape of a racing cars velocity stack or air horn, a highly innovative design in the watch making world. The pioneering design does not stop there; this watch has a screw system on the front of the case rather than the back. The crown guard is more conical in shape. Ever the trailblazer, BRM decided to cast this models titanium case in one piece as the shape could not be machined on digital equipment. This automatic chronograph encapsulates technology that opens up entirely new avenues for development.