I really like my Zenith tipo cp2 and my Sinn 103
but though they have things in common they are different.
The original Zenith was assigned to Italian pilots flying Starfighters I believe, the chronograph is only 30 minutes.
The Sinn has a much longer running chronograph is this for for military transport/civilian use?
Why do military fighter pilots only need a 30 minute chrono,what are they timing as opposed to say the Sinn chronograph?