I have a spectrophotometer with a wavelength adjustment like this:

http://repairfaq.cis.upenn.edu/Misc/multitrn.jpg

but I'm missing the black (in this photo) knob. It must have been accidently
lost before I acquired the device - the knob is easily removed so the
calibration can be adjusted.

Does anyone have an extra knob kicking around or know where to obtain just the
knob?

Thanks.

--- sam | Sci.Electronics.Repair FAQ Mirror: http://repairfaq.ece.drexel.edu/
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