yet another bed level thing for delta

print at least first layer 0.1 or 0.2mm and hold up to the light to see hi and low patches
If your slicer allows, drop the obejct 1mm below the bed to only print the hex blocks

hexagonal blocks are 5mm or 10mm high and either 5, 10 or 20mm between flat sides.
The distance between different blocks (flat side to parallel flat side, outer or inner) is now always a whole number, tho this varies according to hex size chosen)

The largest flat hex is 95mm radius to the points, but may require you to adjust the max printable bed size in slicer and/or firmware. Also available in 75mm radius...

..and especially for those struggling with bigger prints a couple of tiny versions to see if at least the very centre is level ;) 30mm and 15mm for tiko owners :D

Poor adhesion at the edges may lift... so fix adhesion ;)

Created with openscad, so will probably make this customisable if there is any interest