At 11:03 PM 9/26/05 +0100, you wrote: >Harry - did you mean a c spanner? - JohnP John, That's certainly one variation of it, I'm sitting here holding one of those at this moment. It's for the nut which holds paper sanding and grinding disks to the rubber backing disk on my angle grinder. The other variation I had in mind is like a straight-legged calipers, with movable leg(s). Regards, Harry MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.