Why are the measurements often in centimeters instead of inches, i.e., metric?
The measurements on this site – particularly on earlier images – are often only in centimeters because the metric system is the worldwide accepted standard, including for most American scientific publications. However, most of the bottles pictured or linked to the large Bottle Typing/Diagnostic Shapes complex of pages, as well as later images added throughout the website, have the measurements in both inches and centimeters. (This was based on a suggestion from users.) For those images that are purely in centimeters a centimeters to inches conversion table is provided for use.
