. is a free current of air betweenthe Lanterns, so as to prevent the upper Lantern from becoming unduly heated. In this 2-Story Stereopticon the entike upper Lantern can be depressed orelevated ;—(in other makes, generallythe Front only, carrying the Object Glasses,can be depressed or elevated, the light from the Jet consequently being thrown outof line). In addition to the above points of excellence, the UNIVERSAL combinesvarious other advantages, among which may be mentioned the following : THE BELLOWS EXTENSION FRONT, allowing Obj
. is a free current of air betweenthe Lanterns, so as to prevent the upper Lantern from becoming unduly heated. In this 2-Story Stereopticon the entike upper Lantern can be depressed orelevated ;—(in other makes, generallythe Front only, carrying the Object Glasses,can be depressed or elevated, the light from the Jet consequently being thrown outof line). In addition to the above points of excellence, the UNIVERSAL combinesvarious other advantages, among which may be mentioned the following : THE BELLOWS EXTENSION FRONT, allowing Object Glasses of any rangeof Focus to be used, without dispersing the light over the Hall. ^REMOVABLE FRONT. The Bellows Extension Front can be removed in amoment, so as to admit Vertical Attachment No. 680, Microscopic Attachment No.€81, or any other piece of apparatus for Scientific experiments. The Lantern bodies are extremely compact, but being thoroughly ventilated, doaiot become so warm as to be uncomfortable to the operator. 12 IllfuilUymil-riSuir!. The above engravinpj represents the UNIVERSAL when set np. aa •* Stereopticon, showing the Bellows Front, Ventilating Apertures, etc.
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Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectproject, bookyear1888
