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Function For the graphic reproduction of objects. |
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Description The apparatus is formed by a vertical pole on whose top a prism and two lenses are placed. If we place the eye on a certain position, the images of two different zones get one over the other. If the object to reproduce is placed on one of these zones and the point of the pencil of the drawer is placed on the other zone, the drawer can follow the edges of the object to reproduce. | |||
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Function For the graphic reproduction of objects. |
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Description Used with compound microscopes. | |||
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Function For the graphic reproduction of objects. |
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Description It is formed by a brass cylinder inside which a prism with the rounded sides is placed. It can rotate on its horizontal axis. The inner side of the cylinder is closed with a cover. On the lateral surface there is a hole across which the images from the outside are collected. These are deviated across the prism towards the base of the cylinder and projected on a sheet, placed horizontally, on which we can trace the edges of the image. The ensemble stands on a wooden basis with tripod and tent so that it is possible to create a camera obscura. | |||
