Automatic Dimension Tool for Timing Diagrams?

[Rob W]

Hello,

I'm an electrical engineer working in digital design and I often draw timing diagrams in Visio.  Sometimes, I use the Automatic Dimension tool to show a delay from one edge to another.  Of course, I replace the automatic dimension text with the delay value, for example "10 ns".

What I'd really like is a tool that works just like the Automatic Dimension, but it lets me set a scale value in displayed-time-units/length-unit.  For example, if I were to set the scale to "100 ns/inch" then, as I drag the end points to, say, 1.25 inches, then the new dimensioning tool would automatically show "125 ns".

Is there a tool like this?

You can see an example of what I'm talking about on page 5 of one of my diagrams here:
https://gitlab.com/robweinstein/patently-obvious/-/blob/main/drawings/rjw2033d-HP-35-Control-and-Timing-Circuit--Key-Entry-Timing.pdf

Thanks

-Rob

P.S.  Some other examples of my drawings can be found here (for a hobby project):
https://gitlab.com/robweinstein/patently-obvious/-/tree/main/drawings

[Paul Herber]

The dimension tool supplied with Visio Pro relies very heavily on the selected dimension types for its internal operation. Modifying it to use a time instead would not be easy.