To use the calculator:

1. Input the actual marker size (for instance, 25mm).

2. Input the measured marker size from the x-ray image.

3. Click on "Calculate Magnification" to get the magnification factor and percentage.

In this calculator:

1. Users will input their original measurement.

2. Users will also input the magnification percentage (e.g., 10 for 10% magnification).

3. Clicking the "Calculate Scaled Measurement" button will give them the scaled-up measurement based on the entered magnification percentage.