While creating Measurement Type terms you will have specified a primary, and possibly a secondary, system of measurement, and will also have specified how measurements are to be displayed.
If you enter measurements with no indication of the unit of measure (e.g. h2 x w3 x d4), the system will assume the measurements to be in your primary system and will display them as such (e.g. 2 x 3 x 4 in).
You can override this by entering a unit of measure when necessary. For example if a touring exhibition comes with data in inches when your primary system is centimeters, you can enter 2 x 3 x 4in. The system will accept this data, and will convert it to centimeters for display and storage.
You can enter 2in x 3in x 4in but it is adequate to enter the unit of measure only once (e.g. 2 x 3 x 4in) and the unit will be applied to all the aspects.
You can also enter a mixture of units (if you are working from data that is presented in this way). For example you can enter 3in x 17cm x 2' 3" and the system will convert each of these to your primary system of measurement and to your specifications for display and storage.
When creating terms for measurement type, you can specify whether inches can be entered as inch, in or " and feet as feet, ft or ' and you can specify which uniform version of these should be used for display.
If you enter measurements with no aspect delimiters (e.g. 2 x 3 x 4) and the system will assume the measurements to be in the order you specified when defining aspect delimiters, and will display them as such (e.g. 2H x 3W x 4D).
If you enter measurement with aspect delimiters ensure you type the delimiter first (e.g. H2 W3 D4).
Because this is a multi-value field, more than one entry can be made for a single object. For example, you can enter the dimensions, weight and volume measurements of an object on separate lines of the field, or the dimensions of a carpet rolled for transport, as well as its dimensions opened for display.