An x-ray marker device (10) for use on a sheet of x-ray film (100) in a diagnostic radiology environment wherein, the marker device (10) includes a radiologically transparent housing member (20) having a front face (22) provided with a decorative element (23) and a rear face (24) provided with means (25) for releasably securing the housing member (20) to the x-ray cassette (100) and a plurality of radiologically opaque indicator members (30) embedded within the housing member (20) wherein, the indicator members include a peripheral indicator member (31) a directional indicator member (32) and one or more technician identification indicator members (33).