Thanks to many for helpful replies to my original email.

I have now found help is close to hand. The Sydney Powerhouse Museum 
illustrates three pronged forks in its catalogue.

http://www.powerhousemuseum.com/collection/database/?irn=260532

Richard Wright


> -----Original Message-----
> From: HISTORICAL ARCHAEOLOGY [mailto:[log in to unmask]] On Behalf Of
> Richard Wright
> Sent: Tuesday, June 15, 2010 7:45 PM
> To: [log in to unmask]
> Subject: Three-pronged forks of the mid 19th century
>
> I am working on a 'forensic' project in human osteology.
>
> Can somebody advise me on the typical properties of three-pronged table
> forks used in the mid 19th century?
>
> In particular I want to know the dimensions of the cross sections of the
>
> ends of the prongs.
>
> Richard Wright
>
>