I am Nicholas Lindan, the proprietor and chief bottle washer at Darkroom Automation, web address below. Darkroom Automation makes a precision enlarging meter that reads light intensity in 0.01 stop intervals over a 10 stop range. The present meter is optimized, as one would imagine, for use under an enlarger. It is possible to provide a version of this meter that is instead UV filtered and calibrated to the range of intensities encountered in Alt-Process work. I imagine noon-time full sunlight would be full scale - or are there people working with brighter lights ? It is also possible to add an integrating function to the meter. A full scale exposure would be 64 minutes in bright sunshine and the minimum exposure would be 4 seconds in sunlight - I take it this range would cover most alternative materials. The meter, depending on the options, would cost from $110 for a simple light meter to ~$250+ for in integrating meter with remote probe and output for controlling a printing box, with possibly an exposure complete buzzer for outdoor use. Obviously, there has to be interest in such a product before development can start - the market for traditional photographic equipment is small and developing products on speculation is not an available luxury. If you are intereseted, would you be so kind as to reply to this post and/or send email to me at email@example.com Thank you very much.