There is provided an apparatus to weigh a patient comprising a patient transfer board configured to support a patient in a supine position comprising at least 8 transducers, each transducer being provided 300 mm or less from another transducer. The transducers are provided at three or more positions across the width of the patient transfer board； wherein more than 45% of the transducers are provided 100 mm or less from an outer boundary of the patient transfer board.
