If a 0.2mm gauge has been mistakenly configured as a 0.01" at the console
or in software then this can also obviously cause an apparent
under-recording of 20-25%.

John,

I thought this would be the other way about. If you configure a 0.2mm gauge
as a 0.01" (or 0.254mm) then it should over-record by 20-25%. Each tip is
meant to be recorded as 0.2mm but as it is configured as a 0.01" then it
will record as 0.254mm. So 10 tips in a day should be 2.0mm, but will be
recorded as 2.54mm in a gauge thus configured.
--
Freddie
Bayston Hill
Shropshire
102m AMSL
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