Herless Lathe SSB-MK5 Threading Dial

I bought a Herless (australian) lathe from a friend but it had no threading dial.
A discussion on facebook showed that it is a clone but I could not find a replacement dial component anywhere on ebay etal.

The manual showed it has a Metric leadscrew - and my threading indicator showed a 3.0mm pitch. The manual also showed that I needed a couple of gears to handle metric threading - I chose to make a 24T gear for this device (i'll make others later as I need them... the joys of owning a 3D p