A blog on New Zealand Civil
Its a screw! the prop could be hartzell or macauley hand built
PD - forget about that screw for the moment.This object has nothing to do with a Hartzell, a McCauley, or any sort of propeller.
I wonder if it is the Airspeed Indicator of Spartan ABK??Cheers Barry
If there is a tie, hte prop is an Ian Henry DRG 5180/2 I think.Cheers Barry