The R|Z568M is a massive modern Nixie tube produced by Dalibor Farný and his company. Each tube is manufactured by hand in the Czech Republic. As the name suggests, its design is meant to be reminiscent of the Z568M, the largest Nixie tube produced in the GDR. A picture below shows a comparison between the R|Z568M, an original Z568M, and a Z566M. Despite being the smallest of the three, the Z566M, with its 30mm digit height, is still considered a large tube. This makes the impressive scale of the R|Z568M, featuring 50mm digits, even more striking. The manufacturing process of an R|Z568M tube is documented in this video.

The ZIN-70 is a modern Nixie tube and, with its 70mm digits, ranks among the largest ever produced. Handmade in limited quantities by the Ukrainian company Millclock, it is available both as part of their Nixie clock range and as a standalone component. Its construction bears a strong resemblance to another contemporary Nixie tube: the R|Z568M, manufactured by Dalibor Farný and his company. A comparison image below shows the ZIN-70 on the left and the R|Z568M on the right.