Vernier caliper gauge - source?

I need to source some metric vernier caliper gauges, (for work), preferably
plastic and with a dial gauge readout - an accuracy of ±0.1mm is sufficient.
Nothing too difficult about that, you might think. However, there is a snag.

It is vital that the full length of the 'tail' used for measuring depth is
round in cross-section and narrow - 1.5mm dia is ideal. I have just such a
gauge, and you can view a photo of it (30k JPEG) at
http://www.sterry.org.uk/temp/verniercaliper.jpg . (The tail is visible on
the right.) I have had this gauge for some years - it is Swiss made and
branded Rabone. I think it was sourced from RS Components originally.

So far, all of the ones I can find in shops, catalogues and web sites appear
to have tails which are rectangular in cross-section, and far too wide.
Either that, or there is insufficient information to work out what the tail
is like. I thought I had found what I needed on one occasion, but when I
ordered it I found that only the last cm or so of the tail was round. D'oh!

Anyone aware of any makes/models/sources of a suitable gauge?

Ta!

 

There's lots on Ebay; new ones too. I dare say the sellers would answer any
questions about the tail.

Si

 

Ah, that's an angle I never considered. Worth looking into - ta.

Rick