You find a tape measure and take the measurement across the door, then the length of it, then if necessary the thickness.
I would use feet and inches, or metres, centimetres and millimetres.
meters
With a tape measure
1. Before taking any measurements, first check for any potential obstructions that would affect the installation of storm door. 2. Measure the height of the door. 3.Measure the width of the door. 4.Now estimate the door measurements. 5. According to your measurements order a standard sized storm door and if required use z-bar to fulfill the required width. Sources: plissescreen.com, wikihow.com
Here's what I do for modelling... take a tape measure and measure your house door? :)
You would measure the distance of the door with meters because liters measure volume not length.
meters.
A measuring tape or a measuring wheel would be suitable tools to measure the distance from your front door to the street.
A door is about 2 meters, but most likely you'd measure in centimeters.
Feet
I would use feet and inches, or metres, centimetres and millimetres.
Measure it in the store to ensure it will fit through the door.
To measure the size of an exterior door, measure the width and height of the door frame in inches. Use a tape measure to get accurate measurements.
meters
To accurately measure a screen door, use a tape measure to measure the height and width of the door frame. Measure from the inside edges of the frame for both dimensions. Make sure to measure in inches for accuracy.
To accurately measure a storm door for installation, measure the width and height of the door frame opening. Make sure to measure at the top, middle, and bottom of the frame to account for any variations. Additionally, measure the thickness of the door frame to ensure the storm door will fit properly.
With a tape measure