| 摘要 |
The micro-filming apparatus comprises an object table, a camera head arranged above said table, a frame pivotally mounted on said table, a glass plate and mounting therefor mounted on said frame, said glass plate being capable of movement perpendicularly of the plane of the frame to adjust the distance between the object and the film, setting sliders mounted on said frame movable between first and second positions, a handle attached to said sliders by which movement between said two positions is effected, and coacting means arranged between said sliders and the plate to effect perpendicular movement of said glass plate on movement of said sliders, wherein on movement of said sliders into the first position the lower surface of the glass plate is brought into the picture-taking plane and on movement into the second position the upper surface of the plate is brought into the picture-taking plane. In this manner vertical displacement of the camera head or object table is avoided which occasional photographing of single flat sheets of different thicknesses previously demanded.
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