Mys Terry wrote:

On Mon, 15 May 2006 11:01:44 -0400, Martin Baxter
wrote:

Most mechanics refer to these as BSW (British Standard
Whitworth) and BSF (British Standard Fine), the do not call them
"Whitworth" wrenches.

Cheers
Marty

Are you SURE?

http://www.britishfasteners.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=4010&Categor y_Code=400&Product_Count=22

Sorry, got it a bit wrong, they call them BA spanners, (it's been twenty
years since my dad, an English Class A automechanic died. I still have
his tools, (Britool), if I recall they measure the size of the bolt in
two ways; AF, accross the flats (like SAE does) of from apex to apex, I
can't remember what letters get stamped on the end of the wrench in that
case, I think it may be BSF.

Cheers
Marty