X & Y Calibration Ruler Pointer

Clip this on to your hot end nozzle for a precision pointer.
Now you can easily see exactly how much the head/bed is moving during your calibrations.
WARNING: Do not attach while your hot end is warm, or the plastic will melt, warp or possible fuse to your hot end.
I've sized mine to a ubis hot end that came with my Printrbot Simple 1r05, but because its small, it likely to fit most, even if it flexes slightly...
It's not a precision print, but its a precision tool... Gets the job done, so to speak...

This is my FIRST EVER 3d print that I'm sharing with the world, so please give me your feed back... even though its not much to go on... thanks!