As a refined scientific instrument, this tellurium allowed to introduce eager student to the basics of our Universe by reproducing the motions of the solar system. Such devices had become popular during the 17th century, following the publishing of Sir Isaac Newton’s universal theory of gravity in 1687. In 1905, three brothers by the name of Trippensee purchased Laing and re-named it the Trippensee Manufacturing Co., located in Detroit, Michigan. Their first products were marketed as Laing Planetariums, however an improved model was soon introduced bearing their own name. It substituted the previous cord driven gears with a more reliable bicycle-style chain and gear drive. Not much had changed in the last 100 years in the basic mechanics, as this 1950s model is still gear driven but offers a bakelite instead of brass and wood frame. Celebrated as the newest advancement in technology, this sun illuminates! A fab piece, attractive as a visual display and intriguing as a scientific instrument. Description: The 4 inch terrestrial paste board earth sphere displays politically a post WW2 world, c 1950s ( map is simplified). Moon and Venus are made of wood, the hollow 5 inch diameter Sun is made of a thick plastic, base and arm of bakelite with a retro red finish. The base also encloses a heavy metal disc for weight balance. The arm is about 12 inches long, total length including both orbs is about 16 inches. Total height is 12 inches. Compass enclosed in the arm is functional. Condition: The instrument is completely functional, including the lighting and surprisingly well preserved, considering it has survived its educational demonstration in a school... Some minor soiling and scuffing throughout. Still a fab vintage, functional scientific instrument and decorative piece! Well packed, this fine artifact will ship for $25.00, $89.00 world wide. This is a very object! $498 — Item : 813TRIPPELEC50 - SOLD