By printing superimposed sliced and interlaced images, then covering the print with ribbed clear plastic, an optical illusion can be used to display several different images, depending on the viewing angle.

Firing up a relay switch-on delay meter. Its construction has a drawback though.

Sophie Wilson in Micro Men inspirations!

Corrupted EPROM firmware, some bad joints and shorts... It took waaaaaaaaay more time than I thought - but it works again! Will undergo torture tests to ensure it's real deal Soviet "Gnyotsya, ne lamyotsya" 😄

Firing up the heater on a Tesla ZD1000F transmitter triode.

Final bench tests after capacitor replacement.

No solder on a terminal strip lug... right where you have all the heater current.