This is a companion piece to this one http://www.thingiverse.com/thing:366007 Meant to hold the tube to a surface and allow for adjustment. M3 hardware used for mounting. Be careful not to have the mount hardware too high, that it comes in contact with the dekatron tube. There is a short one hole version, but i did not print one of them. Printed this in ABS, 3 perimeters, 0.15fill with a 0.6mm brim (slic3r) It was a little bit loose on the OG-3 russian tube, and you may have to reduce it slightly for a snug fit.