Adjustable Measuring Rods + Circular Scribe

Measuring rods with selectable ends for inside/outside measurements. Rods are threaded so they can be strung together to any length, as well as attach any of the optional tips. Also includes components for drawing circles.

Pretty much everything is exposed as customizable parameters so you can tweak without scripting. There are more parts/options than attached here. Threading can be male/female selected everywhere. Can generate a combo rod/clamping block (last two items)

I saw something like this being offered for an insane amount of money, so I modelled it.

Threading based on [Nut Job](/thing:193647) by [mike_mattala](/mike_mattala/designs)

###Printing and Assembly
####Print
* two clamping blocks
* two end rods
* zero or more non-end rods of any length you may wish to use for extending the measurable distance
* one inset screw - *note: you may wish to adjust the "drive diameter" when generating the inset screw*
* top and bottom bolts
* optionally, any of the t