easy measurement tool

This tool is used to improve the accuracy of measurements for our customizable keyguard device. In particular it is used to measure the size of the opening in the tablet case but it can also be used to measure the sizes and locations of screen elements without requiring that the tablet be taken out of its case. It's very hard to replicate these measurements with a ruler because most cases are smaller than the ruler which then has to be propped up on one side of the case and the extent of the opening has to be guessed at by eye.

You can learn more about how to use the tool here: https://wp.me/P9evBA-dV and you can learn more about our customizable keyguard here: https://www.thingiverse.com/thing:2868839

There are two different "top" files. One has a cavity for a standard 5mm hex bolt and the other has a cavity for a standard 5mm square bolt. The top requires a pair of embedded standard M5 nuts that should be inserted just before the z-axis reaches approximately 7.125 mm. At t