Antique Scientific Carbon Arc Lamp Microscope Projector Nernst Siemens Lighting

Description

For your consideration is a very rare Antique Scientific Electric Carbon Arc Lamp Microscopy Projector. Piece is unmarked. Looks similar Walther Nernst type, Korting & Mathiesen or Siemens Schuckert ??. An important piece of early electrical lighting history, physics and scientific. Measures 18-1/2 x 16". Please view images for further details. Thank you for looking.
There is another rod that slipped back inside not shown in images. This will be packed and boxed separately.
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From the collection of Dr. Thomas Peterson of Pepper Pike, Ohio
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rare antique brass solar system orrery trippensee planetarium
Please notice item has a slight lean to front not sure if that is the way is meant to be.
It appears that a small stick part is missing from the bottom please refer to picture with the red circle for idea.
With wood zodiac arm
If you need additional information or pictures feel free to email me.
Item is As-Is.