On Sun, 19 Jun 2005 20:26:50 GMT, "george"
wrote:

How does one tell the difference amongst the three? There is nothing that
says Victor nor does it have any marking other than the No. 13.

I don't really know - levels aren't my thing, and the Stanley list I
have simply lists them.

There's a "Nicholson's Patent" level (also a Stanley #13) but that's
cast iron (AFAIK). The Victor is described as an "adjustable" level,
the earlier and more valuable version ($150 estimated price for good
condition) is just a "carpenter's plumb & level" and presumably not
easily adjusted.

Might be worth investigating further before using it as a dog chew.