[CR]Unknown Stem Size on Raleigh Super Course?

(Example: Production Builders:Peugeot:PY-10)

Date: Mon, 06 Aug 2001 21:25:24 -0400
From: "Steve Freides" <steve@fridayscomputer.com>
Organization: Friday's Computer.com
To: Classic Lightweights <Classicrendezvous@bikelist.org>
Subject: [CR]Unknown Stem Size on Raleigh Super Course?

When I look at http://www.sheldonbrown.com/gloss_st-z.html#stem, I don't see the size I measure on my 1975 Raleigh Super Course Mk II, which is 24.10mm according to my caliper. I'm measured the exposed portion of the stem quill and I suppose it's possible the part I don't see is another size - what's going on here, please, and what sort of stem must I seek if I want to replace the current one for a different length?

Thanks in advance.