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Alexander François Selligue (1784-1845) was a French engineer. His name was in fact Alexandre François Gilles, but he used Selligue as an anagram of Gilles. In 1832, he together with David Blum patented an application of shale oil for direct illumination. In 1838, he patented "the employment of mineral oils for lighting".
Though Alexander Selligue is often mistakenly credited with the invention, he did invent an improved rangefinder with fixed lenses in 1821 and is responsible for coining the term. [ 3 ] [ 4 ] In 1881, the British Royal Artillery adopted the depression range finder , which had been developed by Captain H.S.S. Watkin for use by coastal artillery .
The bidding reached $999.99 before GoldenPalace.com, a company well known for outrageous eBay purchases, paid the $10,000 Buy it Now price. [49] In January 2006, a group of four men from Australia auctioned themselves to spend the weekend with the promise of "beers, snacks, good conversation and a hell of a lot of laughs" for A$1,300. [50]
Whether it’s their craftsmanship, rarity, or the story behind them, these puzzles are worth far more than their original price. Here are 15 of the rarest and most expensive ones on the market. 1.
This 400E locomotive from the early ’30s sold for a whopping $250,000 in 2016. But there’s good news: you can buy a similar one online for a fraction of the price.Its rarity, condition, and ...
Price on eBay: $8,500 Porcelain dolls don’t have to be more than 2 feet tall to be worth a lot of money. This little lady stands only 15 1/2 inches tall, but her ornate details and impressive ...
Stereoscopic rangefinder atop the bridge of the German cruiser Admiral Graf Spee Portable stereoscopic rangefinder with binoculars from WWII. A stereoscopic rangefinder or stereoscopic telemeter [1] is an optical device that measures distance from the observer to a target, using the observer's capability of binocular vision.
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