Drilling mast (10) for a drilling rig (1) having a drill floor (20) with a well center (21), wherein the drilling mast has a U-shaped horizontal cross section with a left- hand mast wall (11 a), a rear mast wall (11 b), and a right-hand mast wall (11 c), and with an open front side (12), e.g. said mast being composed of interconnected mast sections,wherein a left-hand fingerboard device (71) is mounted to the left-hand side (11 a) of the mast and a right-hand side fingerboard device (72) is mounted to the right-hand side (11 c) of the mast, wherein each fingerboard devices has fingers defining slots that extend parallel to the respective side of the mast and are open at the front side of the fingerboard device.