Like Ron says there is nothing to scale it by. However, if it was a spoke tool the flat end could also be used as nipples are slotted for a screwdriver as well having the square section...Ian
email (option): ian@wright52.plus.com
I've been watching this and I'm not going to say what it is until the auctions over. There's no chance of getting anything cheap when it gets posted here, it's already at too much money for what it is 
email (option): horror@blueyonder.co.uk
Hi Horror..Must be Gun related then...?...Ian
email (option): ian@wright52.plus.com
I thought that everyone had one of these ?
Here's a clue to scale :-
I do use mine but I'm not completely sure about the reason for the unusual form and why the jaw is so crude.
I think that the seller has dozens of them. He's been punting them out for years. It could be used on an M20 but may not be necessary.
Grrrrrrrr Rik....! The price will go through the roof now 
email (option): horror@blueyonder.co.uk
Yes Rik, would have been nice to add to the tool roll. I've got most items now except the pressed steel spanners and this spanner. All items that people would throw away. This one went for £17.20 which is too much for what it is 
email (option): horror@blueyonder.co.uk
So what is it?
...Ian
email (option): ian@wright52.plus.com
...Ian
It also fits the dynamo clamping band screw. It was a late-war addition so presumably introduced to deal with an access problem. I have no idea why the jaw has a squared-off form to deal with a hex-head fastener.
We had a thread dealing with W/NG toolkits which show that the Ariel tool didn't have the odd offset so maybe this one is specific Norton ? Mine is in the tool roll hiding behind the magneto spanner.
http://pub37.bravenet.com/forum/static/show.php?usernum=3155626639&frmid=16&msgid=1208029&cmd=show
Well the good news is he sent me a second chance offer and my bid was no where near the final auction price, so he must have had a few kicking around 
I just need the small stamped out spanners now. Oh I forgot about the box spanners as well
email (option): horror@blueyonder.co.uk
Told yer 'e 'ad loads of 'em !
Your life will never be the same again when one of these arrives...
Can you tell me which spanners you need by part number ?
I've never been so excited 
email (option): horror@blueyonder.co.uk
Now I know what it is, I want one too 
email (option): ahum@quicknet.nl
I want a stainless one.. ...Ian
email (option): ian@wright52.plus.com
...Ian Good point Ian, you could have them made pitted, covered in scale as they came out of the forge but at least they'd be shiny.
Could you use them on an M20 or does the M20's magneto retaining strap preclude that ?
Well I've already got stainless magneto straps so it would work quite well..Ian
email (option): ian@wright52.plus.com
May I point out that they are dynamo strap tools, not magneto strap tools
email (option): ahum@quicknet.nl
Oops..
...Good job the dynamo strap screws are stainless as well ..Ian
email (option): ian@wright52.plus.com