John:
We use the old fashion microfiche reader, but to speed the process and reduce an error step, we have attached a Sonic GP9 2D digitizer to the top of this set-up. The data is digitized into the DisBcal program to calculate mean length at capture, incremental growth, and back calculated lengths.
If this is of interest, I can send additional details, etc.
Sincerely, Steve Fischer Fisheries Research Biologist Missouri Dept of Conservation Columbia, MO
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