5.8 ghz quarter & half length measurement tool.

This is a very simple measurement tool to be used e.g. the same way as suggested in this video: https://www.youtube.com/watch?v=pJEeEi4xfzI

the dimensions are exactly 1 quarter wavelength (12.93mm) x 1 half wavelength (25.85mm) x 1mm height.

Best print in a PLA, not ABS, since ABS will shrink after printing.