Mine is a bit different and it fits on my 11x44 Sheldon.
That looks like a vice on it - more capability. I have vice jaws
and they are bottom only with two drive screws onto plates...

http://home.pacbell.net/oldtree/

Look at newsletter 2 of an oldish web site that is oddly still up of mine :-)

The picture wasn't the best in those days. Poor lighting....

John Engineman1 and I started a club for a while.
Then we joined the south bay club.

Martin

Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
TSRA, Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member.
http://lufkinced.com/


William Noble wrote:
here is the link
http://cgi.ebay.com/ws/eBayISAPI.dll...m=300203631595
looks to be in good condition but it needs some cleaning and oiling