This is a prototype for a Sadler 34 stanchion base - it has the same size as the Sowester Aluminium version used in the 1980 years.
Could be used to make a test print for size / measurement and then get it printed in Aluminium by an online printing service.
WARNING - DO NOT USE printed parts made of thermoplastics as they might brake easily under high load and are not meant to replace security relevant parts on board!
Disclaimer: First prototype - not 100% tested yet however putting it against the original version it seems to fit perfectly.
The author marked this model as their own original creation.