Inches (abbreviated as in. ) It means thumb in Dutch, and one inch is the length of thumb. Of course, the length of a person's thumb is also different. /kloc-In the 4th century, King Edward II of England promulgated the "standard legal inch". It is stipulated that the three largest wheat grains should be selected from the middle of the barley ear and arranged in a row one inch in length.

The size of the photo is in inches, 1 inch =2.54cm, and usually x inches refers to the inch length of the long side of the photo. For example, 5 inches means that the photo width is 2.54x5 =12.7cm; 12 inch means that the width of the photo is 2.54x12 = 30.5cm. ..