Listbox text stored as decimal variable

[station2station]

Hi,

I am sorry ahead of time for being a first time poster and posing what might be an obviously simple question. I googled and youtubed my brains out first.

In my program I want to:

Have a listbox that says: 10 gauge , 8 gauge, 6 Gauge, etc
When a user selects "10 Gauge"
I want to assign the value .000129 to it and display it in a label (or textbox)
I ALSO want to use the value .000129 in a calculation.

So basically (ListItem = "10 Gauge" = .000129)

Does that make sense? Should I just elaborate on the whole program?

Thank you very much for your time.

My previous program incorporated radio buttons nexts to labels and I gave the value to the radio button, however I have MANY more wire sizes I would like to add and it looks silly with all the buttons.