It would be helpful if you mentioned where beeswax and jojoba oil can be obtained. What *kind* of stores would have these products? I haven't purchased pure beeswax since about 1961, and I can't remember where I found it! (I used it when polishing a telescope mirror.)
Thanks. The meters I'm working with are Soligor digital. On the side there is a small label that peels off to reveal three potentiometers. (There is a 4th space, but it is empty.) If the engineers were reasonable, the two end ones would be high and low limits (left-to-right? right-to-left? Easy enough to find out) and the middle one would do something with linearity.Ideally, there would be factory tuned electronics for the specific photocell, leaving only low or high point plus slope to adjust. Of even better, leaving only low and high points adjustable, the slope being inherently linear or rendered linear by electronics.
Interesting, but I think Cds cells might be quite different in the adjustments they require. My meter uses a silicon cell (Soligor digital). My favourite spot meter is the little Pentax Digital as modified by Zone VI.
Matt,Have you run across any information on how the meter can be (re)calibrated? At least until fairly recently, spot meters I've looked at have three adjustment potentiometers. Although I have experimented with these, I have not been very successful making one meter match a second (same brand and model). One adjustment pretty clearly manipulates low sensitivity, but I haven't settled on how to manipulate the other two. High value(s) and midpoint? I suspect that this will suddenly become blazingly obvious to me, but I haven't yet had the Ah Ha! moment. :-)