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No rubber or plastic polymer were used up to 1995. Nowadays, ARLO produces cast, laser-cut and 3D, ready to run scale train models and kits. Bluejacket Shipcrafters (USA) Combrig Models (Russia) Eduard (Czech Republic) Flagship Models (USA) Fleetscale (UK) JetMads - resin cast and 3D printed (Turkey) John R. Haynes (UK) Frog (1931-1949 ...
Following the patent and release of Harold's Long Scale calculator featuring two knobs on the outside rim in 1914, he designed the Magnum Long Scale calculator in 1927. [ 6 ] [ 7 ] As the name "Magnum" implies, it was a fairly large device at 4.5 inches in diameter—about 1.5 inches more than Fowler's average non-Magnum-series calculators. [ 8 ]
The standard used in hobbyist miniature wargaming, where it is considered interchangeable with 1:300 scale. Commonly used for micro armor. 1:270: 1.129 mm Used by Fantasy Flight Games' Star Wars: X-Wing Miniatures Game for their small and large ships. 1:250: 1.219 mm Used by Heller for model ships. 1:250 scale is commonly used with aircraft ...
The Curta is a hand-held mechanical calculator designed by Curt Herzstark. [1] It is known for its extremely compact design: a small cylinder that fits in the palm of the hand. It was affectionately known as the "pepper grinder" or "peppermill" due to its shape and means of operation; its superficial resemblance to a certain type of hand ...
Static model rocket kits began as a development of model aircraft kits, yet the scale of 1:72 [V.close to 4 mm.::1foot] never caught on. Scales 1:48 and 1:96 are most frequently used. There are some rockets of scales 1:128, 1:144, and 1:200, but Russian firms put their large rockets in 1:288. Heller SA offers some models in the scale of 1:125.
The 1/4-turn shaft carries (also, each column) gears with 12, 16, and 20 teeth, for 3, 4, and 5. Digits [1] and [2] are handled by 12 and 24-tooth gears on the 1/12-revolution shaft. Practical design places the 12th-rev. shaft more distant, so the 1/4-turn shaft carries freely-rotating 24 and 12-tooth idler gears.
The first American-made pocket-sized calculator, the Bowmar 901B (popularly termed The Bowmar Brain), measuring 5.2 by 3.0 by 1.5 inches (132 mm × 76 mm × 38 mm), came out in the Autumn of 1971, with four functions and an eight-digit red LED display, for US$240, while in August 1972 the four-function Sinclair Executive became the first ...
1:48 scale: Several companies produce die-cast model aircraft in 1:48 scale, which is a popular scale for plastic construction kits. Some die-cast military vehicles and model train accessories are also made in this scale. 1:50 scale: The most widely used scale for construction vehicles and for other trucks and buses.
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