Electronics enthusiasts, hobbyists and makers looking for a handy tool to help you troubleshoot their latest project, may be interested in an open source PantoProb created by Kurt Schaefer. As you can see from the image above the open source probe requires a few 3D printed parts as well as some off-the-shelf hardware which is easily sourced. Kurt has also provided full instructions and a Github repo with all the necessary files to make your very own 3D printed testing probe. Check out the video below to learn more.
Kurt designed the PantoProbe to help troubleshoot his own projects and has now kindly made available for everyone to make. The pantographic mechanism lets you move a probe around in the very precise way. The PantoProbe can be built for less than $20 and allows you to take readings from tiny chips that would normally be inaccessible when using everyday probes. As well as the 3D printed parts the probe also uses brass tubing and washers to make the precise joints needed for the accurate pantograph.
If the construction of the PantoProbe looks a little too complex for your skills then you might like trying to build the simpler PantoFlex which is also available via the PantoProbe.com with full instructions provided.