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Structure of mechanism |
| Function |
This device consists of a large brass tube. At one end there is a lens of 16cm diameter (giving a real image of the object), and at the other end there is the eyepiece (which acts on the image like a magnifying glass). A knob on the right-hand side is used to adjust the sharpness of the image by moving the eyepiece. On the left-hand side of the device there is another small telescope with a wider angle of view, called the finder. The instrument is attached via a horizontal bolt to a brass rod, itself fixed to a cast-iron tripod. |
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Application |
| Examples of application |
This instrument is used to observe very distant objects. It was used by future teachers during their studies at the men’s and women’s teacher training colleges, now the IUFM (University Teacher Training Institute) in Clermont-Ferrand. |
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