TotalThickness is a parent element for subelements Value (a decimal number) and Unit (unit of measure, e.g., '5 micrometers'). The dimension through the object, as opposed to its length or width, in other words, the measure of the object along its shortest dimension. Total Thickness is comprised of a decimal numeral and a specified unit of measure.
For moving image or audio objects contained within an integral shell (cartridge, cassette) record here only the thickness of the media itself. Record the thickness of the shell in the shellDimensions element. Record thickness of non-integral containers (jewel case, film can) in the outerContainer element. Record thickness of individual layers, such as an emulsion layer, in the Layer Detail elements.
Total Thickness - Thickness Value
Within the Total Thickness dimension, the number of units of measure.
To describe fractional values, prefer a decimal numeral unless common usage dictates otherwise ('3.5 mils' not '3-1/2 mils'). Use metric system measurements where practical. The term recorded here is designed to precede the Total Thickness Unit in public displays, resulting in a statement such as:
Total Thickness - Thickness Unit
The unit of measure used to describe the thickness of an object.
The term recorded here is designed to follow the Total Thickness Value in public displays, resulting in a statement such as:
mil(s) (thousandths of an inch); millimeter(s); centimeter(s); micrometer(s); inch(es)