In microbiology labs, "Quebec Colony Counters TM" used to be used to quantify microbial colonies on agar plates. These simply provided a backlit grid over which a petridish was placed. Above the dish a magnifying lens was suspended. I'm guessing, but magnification is on the order of 10X??? (don't have access to one at the momment. Would some sort of mounted magnifying lens help with visualization of read out from a conventional meter?
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