It may very well NOT meet his needs.  He wasn't very specific about what=20
he needs.  He did say that quality, accuracy and calibration were not=20
important.  To do simple comparison tests, as he stated, monotonicity=20
and repeatability should be sufficient.  The CdS / Ohmmeter combination=20
would provide that.  It is cheap and locally available, and would=20
provide good resolution.  Is that good enough?  Only he can decide=20
that.  I just think he should have as many options as possible, then he=20
can decide what does or doesn't fill the bill.

Another idea would be to visit a camera store.

Kerry


alan.b.pearce@stfc.ac.uk wrote:
>> Have you considered a CDS cell and an ohmmeter?=20
>> Both are available at any RadioShack.
>>    =20
>
> But he is asking for a Luxmeter, so I would assume that it needs to be
> calibrated in some way, and a cdS cell with ohm meter would be
> uncalibrated ...
>  =20



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