Bob AZ wrote:
I have done the google seach and of course this forum.

Bed number is S2570.

Catalog number is 5FWQM.

I have determined that the bed number, S2570, means 12" but the
Catalog number is bewildering.

The M in the Catalog number means 56" bed. The lathe bed length is 56"
according to the nameplate.

The man who does the lathes site in the UK is away until next week.
Yahoo has a Sheldon lathe group, and we have a family member of the
original Sheldon founders who knows EVERYTHING about them.
http://groups.yahoo.com/group/Sheldonlathe/

Jon