Jamoni's house, Sunday night:
RIIIING!
"Oh, hey, boss, what's up? You need a tool to measure a bolt circle? It needs to measure from center of one bolt hole to center of another? And it needs to do it inside a tower, where you can barely get your arm in? Well, I think I can probably do that. Just give me a couple days and.... you need it first thing in the morning?"
After a quick run to the hardware store and a fast rummage through the junk box, I present to you THE UGLIEST TOOL EVER.
Measuring is done with a yardstick, just measure from left side of one ball to left side of the other. I checked them, and while not perfect spheres, they are close enough for this work. Largest measurement possible is just over 30", tool is locked with the thumbscrew at the pivot.
My original idea was just a rod, with two cylinders clamped on to it. One end of each cylinder would be a hemisphere. The problem with that is there may be bolts and whatnot between the two holes. This way, I have flexibility to avoid obstacles.
Like me, it's not pretty, but it gets the job done!
