With the portable pulmonary instrument clinicians can now measure vital capacity (VC), Maximum Ventilatory Volume (MVV) and forced vital capacity (FVC). The measurement algorithms point to the ITS, ERS standard as outlined by the American Thoracic Society (ATS). Features include pressure flow is adaptable, precise, sensitive, flow sensor, easy to launder durable and clean. All parameters are displayable on big screen measuring (320x240), there is in built-memory which is able to store 300 cases of measurement results for patients. Automatic calibration of instrument, operation in English convenient operation. Thermal printer in built 110 mm able to provide a superior clinical report, measure value and predict value. Breathing time measured as FVC measuring time 25 second, VC time 50 seconds and MVV time 12 seconds unit is compact and flexible this provides favorable coordination between device and patient.