Hey Ersatz2,
I would humbly point you towards the excellent German brand Sinn.
Post number 3 in this thread has a Sinn 757 UTC, which is both a chronograph with 30 minute and 12 hr counters and a 60 minute countdown bezel.
You also mentioned a preference for ‘tool’ watches, and Sinn has this in spades between specially hardened cases, -45/+80 degC rating, moisture-capturing capsule, etc, etc. Oh, and they are reasonably priced, and originally founded by a pilot.
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