I just discovered this rare video footage of the Tempest Mk V. It shows the operation and troubleshooting of the hydraulic system, including the cockpit controls. Very interesting- I was not aware that the Tempest had rods that extended above the wings to show the undercart was down and locked, but their operation is shown in the video. I hope you enjoy watching this and that it has not been posted before.
Mike
https://www.youtube.com/watch?v=XsQZjkn5qLs