"Josepi" wrote in message
...
Probably much more accurate then an estimate of a 100W bulb brightness.

First, not an informed statement, as most fitness mfr's don't really care
what a watt even is, never mind actually making accurate calibrations
against a standard.

Second, there is no estimating of bulb brightness if you've got a voltmeter
in front of you, and you are maintaining 120 V. This then becomes as
accurate as anything, short of accurate/expensive regulators, solidstate
integrators, etc.
--
EA



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"Winston" wrote in message ... I don't
really know for sure. That's just what the instrument
indicated.

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Existential Angst wrote:
Was *your* 70 W really 70 watts? Hard to say.