Dial gauge I have... in my "at work" tool chest. It's a clamp on style with the multi-joint snake extension that can be locked in any position. Quite handy.
No spoke torque wrench but sound is also a measure of tension. I go by sound. Of course, some will be under more tension until the wheel settles in. It will end up being tuned up a few times more after the bike is a runner. Maybe by then I'll have invested in a spoke torque wrench.
I'll have to bring my dial gauge home and try it. I like the idea.
Thanks.