N.S.W. Ambulance Meritorious Service MedalN. S. W. Ambulance Meritorious Service Medal Full size medal Unmounted with 15cm ribbon as required for swing mounting. Miniature size medal Unmounted with 10cm ribbon as required for swing mounting. The award was introduced in August 1990 to recognise outstanding contributions to duty by employees of NSW Ambulance. It is to be awarded for meritorious service, that is, service distinguishable from an employees faithful and zealous service of ordinary