| 摘要 |
A portable or hand-held viewer comprises an assembly of two cylinders, one of which is transparent, which are retained on the end of a support means or handle member. When a microfiche transparency is inserted between the cylinders and the transparent cylinder is rotated, the microfiche transparency is moved between the cylinders and relative to a viewing station in the end of the support means or handle member. The manner in which the two cylinders are mounted on the support means or handle member permits them to be moved as a unit in a lateral direction as well as to be moved as a unit while the transparent cylinder is rotated to move the transparency in a longitudinal direction.
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