A little help from my friends...

From: Tony Duell <ard_at_p850ug1.demon.co.uk>
Date: Sat May 15 18:29:16 2004

> The thread pitch and diameter of the worm drive is different. That
> actually matters, since the more expensive adjustables can be rebuilt.

You mean there are some you can't get parts for. I guess those are the
sort of tools I wouldn't consider owning.

>
> You also can't use a metric crescent on SAE nuts.

One of my adjustables (yes, I do admit to owning one :-)) has a scale
along the boddy with a line on the moving jaw. This gives the jaw
opening, of course. I've only ever seen them calibrated in mm (which
makes it a 'metric adjustable spanner', I guess...)

-tony
Received on Sat May 15 2004 - 18:29:16 BST