A worksheet carries its figures inside itself: the body refers to one by name, and the data sits in the trailer at the end of the file. That keeps the mathematics readable and the file a single self-contained document.
Nominal bore and working pressure of the gauge shown below.
The reference may say how large the figure is drawn: the gauge below is 72 px of pixels placed at 216. That is the size it asks for and not a promise, so a page narrower than the figure shrinks it whole rather than showing part of it.
Force on the diaphragm.
A reference with no data behind it is reported rather than passed over.
[image missing_figure: missing]