With the advent of electricity, so to came the invention of the Electrocardiograph Machine. This piece of medical equipment gave nursing staff and doctors a more precise indication of a patients heart beat and was used extensively across Victoria's medical institutions. The equipment is significant because it is a fully intact example of diagnostic equipment used in a mental health hospital in Victoria Australia.Cardiotrace Electrocardiograph Machine in blue plastic case with black handle. Contains: Electric cord Cords to link electrodes Graph paper to measure heart beats Instruments on panel marked 'stylus heat', 'off', 'run', 'position', 'test', 'record', '1', '2', '3', 'aVR', 'aVL', 'aVP', 'V', '1/2V', 'lmV', marker.Manufacturer: Medical Instrument Co. Pty. Ltd. Distributor: Watson Victor Limited Serial No: 3362 Cardiotrace Heat Mark III Electrocardiograph/Voltage 220-240 A/C /Frequency 50 cycles per second/Watts 45 serial 3362/Caution: Refer to Manual for full detail.electrocardiograph machine, medical instrument, medicine, health, mental health, ararat mental hospital, j ward

Cardio phone 12 lead ECG transmission cardiac rhythm over telephone to cardiology department of receiving hospital, mica units had direct admission rights with receiving hospital, the receiving hospital decoded the rhythm and advised the ambulance crew of action required, these units were battery powered.Grey metal box containing built in electrical/medical equipmentBOTH ELECTRO-CARDIOGRAPH