[Eliot Ness]

To get an exact match you might need to buy a parts chassis or get real lucky on eBay.

You might be able to find and modify a pointer from a different set to look pretty close.... when it's all closed up you probably only see the tip of the pointer anyway.  This is where a Dremel tool, small files, tin snips, etc. come in handy.

I bought some aluminum roof flashing from Lowes or Home Depot a few years ago and it looks like it would be pretty easy to cut and bend.  I can cut off an index card size piece and mail it to you in an envelope if you send me your address.