I love the aesthetic of the Vostok radio room clocks
They were meant for the radio rooms in ships, the first 3 minutes of every quarter hour are highlighted in red because during those minutes ships are (were? I don't know current high seas radio procedures) meant to maintain radio silence and listen out for distress signals
@troubleMoney that's real practical. now I want something like this. it'd be useful to have a clock with the 15-minute quadrants in different colors, maybe