David Hansen wrote:
snip
Striking a trainstop occasionally at high speed is very different to
striking them regularly at high speed. One of the reasons there are
tripcock testers is to ensure that the arm has not broken off.

I'd put that differently. The tripcock tester is there to ensure that
1) the train has a tripcock set
and
2) that the tripcock is to gauge.


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Cheers for now,

John from Harrow, Middx

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