Archived posting to the Leica Users Group, 1996/12/17

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Subject: Re: Leica meter MR-4
From: Dan Cardish <dcardish@microtec.net>
Date: Tue, 17 Dec 1996 20:13:26 -0400

At 08:43 AM 17-12-96 -0700, you wrote:
>
>but Dan's suggested procedure was sensible enough that I don't think you had to
>>be alarmed.
>>
>If you are going to paraphrase and edit my posts, please comment only on my
>statements which have been copied in their entirety and in context: There
>were TWO (2) different procedures suggested to Ian. How could they both be
>right? There is one procedure in the original Metrawatt manual. Could this
>also be right?
>
>Every meter I own, including my MR-4 seems to have a curved scale, where the
>higher values result from the needle moving a greater distance between known
>intervals (stops). Is your MR-4 different? Choose a range of numbers, say 0
>to 10. Now square each of the integer values in that scale and plot them.
>What does the curve look like? Is it "linear"?
>
I think the key question to ask is this:  what happens if the meter is
NON-LINEAR with respect to its response to light values, but the meter IS
LINEAR with respect to its response to the setting of the zeroing screw
adjustment?

Dan C.