Focus was accomplished by turning the two wing nuts. This changed the distance between the sample (mounted on wheel "A") and eyecup (B). The lens carrier inserted into the dovetail (C).
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Focus was accomplished by turning the two wing nuts. This changed the distance between the sample (mounted on wheel "A") and eyecup (B). The lens carrier inserted into the dovetail (C).
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| The sample was mounted on a rotating, 6-position sample holder ("A" above) | |||||