[Bell Historians] Identification requested

[Richard Grimmett]

Bickerton, Roderic (SELEX GALILEO, UK) wrote:
>  
> 
> How interesting, would this have been a "by request" feature.

don't know.

> Is it now a standard feature?

don't know

> I wonder if the bull ring installation had twiddle pins as installed or 
> if they were were added at a later date.

at installation, I believe - I am not aware of any major work being done 
post 1928 apart from the installation of a flat 6th, and had the 
twiddlepins been added afterwards the headstocks would have needed to be 
removed from the tower.

Clarrie