Carriage Measuring Tool

This is a customizable thing that can be used to measure the distance between the rods on an axis. I designed this as I needed a way to find out what the X-carriage dimensions of my no-name Chinese printer were. It's not particularly easy to measure with calipers, and you need it to be exact, so here is a thing that'll confirm the dimensions for you.

First take your digital calipers and measure the rod diameter. It'll probably be a metric rod of 8mm or 10mm diameter. Unless you know it's not