Authored byS. A. Beshenkov andE. I. Kuznetsov, illustrated byA. Part of the renowned Prosveshchenie series. A newer model’s needed yet. 🔮How to Use / Style Verified originalProsveshchenie USSR publication, part of the official.
eBay
About the Orrery Thegears and cogs within the orrery enable the planets to rotate along their respective orbits, providing an educational tool to better understand the solar system. This particular model showcases the celestial bodies in motion, giving a hands-on representation of the laws of planetary motion.
eBay
About the Orrery Thegears and cogs within the orrery enable the planets to rotate along their respective orbits, providing an educational tool to better understand the solar system. This particular model showcases the celestial bodies in motion, giving a hands-on representation of the laws of planetary motion.
eBay
The product is a highly sought-after naturalist field microscope from the late 19th century, considered to be extremely rare in the scientific community. This device would have been used by naturalists and field researchers to observe and study microscopic specimens in the natural environment, allowing for a deeper understanding of wildlife and ecosystems. Its unique design and historical significance make it a valuable collectible for those with an interest in science and medicine.
eBay
The slides are in excellent condition.
eBay
The slides are in excellent condition.
eBay
About the Orrery Thegears and cogs within the orrery enable the planets to rotate along their respective orbits, providing an educational tool to better understand the solar system. This particular model showcases the celestial bodies in motion, giving a hands-on representation of the laws of planetary motion.
eBay
Blundell (BRL ) Academy Series 306 Tarrant Hydraulic slide rule - UNUSED. Blundell Rules Ltd (England). Using formulae developed by Hazen-Williams and J. Tarrant, this slide rule calculates hydraulic flow in pipes and circular sewers.
eBay