Perhaps that tool might be newer than 1994, since the first C10 chain was 7.2mm wide, and their subsequent one was 6.9mm wide, the width SRAM finally chose for their first 10sp chain just two years ago. C9 chain was around 7.5mm, introduced in 1995 or 1996, so perhaps the tool's part number is common to later models?
Then again, and more likely, the markings you referred to might be the travel distance of the pin as it's pushed thru, or the (identical) abbreviated width (from outside the opposite plate to the head of the fully-pressed pin on this side). This would seem to correlate to an 8-speed chain, but even my just-acquired, 1997 8sp Record Titanium gruppo-equipped, NOS Boulder shipped with a Sachs chain, and I can't remember a Campagnolo 8-speed chain. Did one exist?
The Campagnolo tools, like most of their components, were (are) better shaped and finished than they needed to be. Compare to Mafac, Cyclo, Stronglight, Var, etc. Even Phil eschewed such a fine finish on their tools.
David Snyder largely off-topic in Auburn, CA
> Tom Sanders wrote:
>
>> I just got a pair of Campagnolo Chain Pliers, the #1130020 model shown in
>> the 1994 Campagnolo tool catalog. They are so beautifully made, I may
>> just
>> hang them on a bicycle! The depth adjustment seems to be either
>> infinitely
>> variable or there are markings of 7.1 or 7.3 on it. Are these settings
>> both
>> for an eight speed chain? I'm curious as to what these two settings
>> signify.
>
John Thompson replied:
>
> -- Maybe for road or track chain? Do you have any pictures