I am currently building an alethiometer from the phillip pullman book series: his dark materials

Specifically its a remake knowing what we know now having finished the two trilogies.

Instead of the three hands and the moving needle, its just one moving needle. Its made from wood and aluminium. The reason for aluminium is that in the 1920s (roughly the age that these books are set) is a wonder material, a bit like carbon fibre/titanium is now.

I have the working mechanism (controlled by 8mm steppers) I need to finish the case and dial, and paint it. I also need to shrink the controlling mechanism and design the voice->text->inference->output to 36 symbols logic.