From: Richard Sullivan (richsul@earthlink.net)
Date: 02/15/03-01:01:16 PM Z
My Brumak has a "slope" adjustment. You first zero it with the "zero" dial
and then adjust the slope. The Macbeth may be different however.
--Dick Sullivan
At 05:41 PM 2/15/2003 +0100, you wrote:
>Hi list,
>
>I hope I am not too much off topic, but I thought this could be of
>interest for someone else, too and last not least I am using that device
>for alt processes ;-)
>
>Last week I got a Macbeth TD102 at ebay for 50,-- Euros. The meter is in a
>very fine condition and today I took some readings from a Kodak ST 34 step
>wedge. Zeroing and calibration seem to work pretty fine but the readings
>are some kind of confusing. If calibrated with the ST 34 at the logD 2.4
>position the meter of course exactly reads 2.4. So far, so good. But
>going to position 1.4 of the wedge it reads 0.2 less and going to 3.4 it
>shows 0.3 more than it should. How can this be explained? Can it be
>caused by an inaccuracy of the wedge? At what density should I calibrate
>the meter? Unfortunately there came no manual with it.
>
>Thank you for your kind help.
>
>Bernhard
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