`Ictineo` Submarine Clock

A `porthole` style clock inspired by early submarines such as the `Ictineo 1` or the `Nautilus`. Turret made from an old bench ammeter enclosure now housing the second digits. Hours and minutes are handled by ZM1020 tubes. Colour changes every hour and switchable `Frankenstein` flickering effect. Pools of random colur changing underneath add to the undersea dreamy effect.