![File:Normal values for Peak Expiratory Flow PEF - EU scale - symbolic designators.png - Wikimedia Commons File:Normal values for Peak Expiratory Flow PEF - EU scale - symbolic designators.png - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/5/57/Normal_values_for_Peak_Expiratory_Flow_PEF_-_EU_scale_-_symbolic_designators.png/414px-Normal_values_for_Peak_Expiratory_Flow_PEF_-_EU_scale_-_symbolic_designators.png)
File:Normal values for Peak Expiratory Flow PEF - EU scale - symbolic designators.png - Wikimedia Commons
![A small device with great importance Presented by : Dr. Jalal Mohsin Uddin DTCD, FCPS (Pulmonology) Presented by : Dr. Jalal Mohsin Uddin DTCD, FCPS (Pulmonology) - ppt download A small device with great importance Presented by : Dr. Jalal Mohsin Uddin DTCD, FCPS (Pulmonology) Presented by : Dr. Jalal Mohsin Uddin DTCD, FCPS (Pulmonology) - ppt download](https://images.slideplayer.com/36/10636530/slides/slide_4.jpg)
A small device with great importance Presented by : Dr. Jalal Mohsin Uddin DTCD, FCPS (Pulmonology) Presented by : Dr. Jalal Mohsin Uddin DTCD, FCPS (Pulmonology) - ppt download
![File:Normal values for Peak Expiratory Flow PEF - EU scale - symbolic designators.png - Wikimedia Commons File:Normal values for Peak Expiratory Flow PEF - EU scale - symbolic designators.png - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/5/57/Normal_values_for_Peak_Expiratory_Flow_PEF_-_EU_scale_-_symbolic_designators.png)