Austin BT12 spanner

[JoeRowing]

Ok. Let me know if you need anything.
Fwiw it's quite a poorly cleaned up forging. The spanner bit is ok but the handle bit much less so

[JonE]

so what was the advantage of the double ended? Is that because the 7 spec became more complicated?

[bystander]

Generally speaking, the main feature of proper tappet spanners is that they are flat and thin, particularly if they are single-ended and designed to be used as a pair. I can't really see the advantage of a double-ended spanner, as you usually need to hold the tappet screw and the conical nut at the same time?

[jpsmit]

so what was the advantage of the double ended? Is that because the 7 spec became more complicated?

Typically one end is left handed and the other is right handed (I'll get my coat) 

[dickie65]

I have a pair of replica original pattern ones which are from the 1970s.
So check with our specialist suppliers.

[Colin Wilks]

What is the objection to repurposing an old 1/2" af or 13mm spanner with a couple of minute's filing and a hacksaw?

[Steve Jones]

It's what I did years ago, Colin. Still have it, still use it.

Steve

[Graham Barker]

Hi Marcus, do you intend to make a batch of these spanners and offer them to the A7 community in the same way that you have offered other useful tools?

[Marcus Ling]

Hi Graham,

I have been asked by a guy in Invercargill to make him a pair so I will get a few extra cut for those who might want them. I just need to sort out the size, I presume that the original BT12 was pressed out of flat sheet rather than a forging so was hoping someone could post a photo of an original.

Cheers

Marcus

[Colin Wilks]

Came across this:
"AUSTIN TOOL KIT TAPPET WRENCH / SPANNER BT12 | #161141801" https://www.worthpoint.com/worthopedia/a...-161141801
but how reliable the description is is anyone's guess.