Used vintage condition in full working order Some light chrome loss
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About Orrery. 2- Orreries are often used as educational tools to teach about the solar system and the laws of planetary motion, and they can also be appreciated as works of art and engineering. 1- It typically includes a series of gears and cogs that move the planets along their respective orbits.
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Presenting a Reading Magnifier Glass. Material: Wood and Brass. Color: Gold And Brown.
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Microscope Parts and Accessory. 1 DIV = 0.5mm. X = Y = 0.5mm x 20 = 10mm. Labour protection. we will try our best to resolve any issue. Material: Optical glass.
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WARNING: SOLD AS A COLLECTABLE, NOT FOR ACTUAL USE!
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I have abstracted the section on the Astro Compass and present it here in A5 booklet format. Black and White, 20 pages with many illustrations to clarify the operation, and the theory behind the Astro Compass.
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Excellent condition throughout.
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