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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]
Richelieu's primary business is the distribution of specialty hardware products. Products distributed by Richelieu include cabinet parts (such as hinges), decorative products (such as doorknobs and mouldings), and kitchen accessories (such as cutlery trays). [2] [4] Its primary customers are cabinet, furniture, door, and window manufacturers. [6]
The Fuller calculator, sometimes called Fuller's cylindrical slide rule, is a cylindrical slide rule with a helical main scale taking 50 turns around the cylinder. This creates an instrument of considerable precision – it is equivalent to a traditional slide rule 25.40 metres (1,000 inches) long.
A slide rule scale is a line with graduated markings inscribed along the length of a slide rule used for mathematical calculations. The earliest such device had a single logarithmic scale for performing multiplication and division, but soon an improved technique was developed which involved two such scales sliding alongside each other.
To extract a cube root using a slide rule with only C/D and A/B scales, align 1 on the B cursor with the base number on the A scale (taking care as always to distinguish between the lower and upper halves of the A scale). Slide the slide until the number on the D scale which is against 1 on the C cursor is the same as the number on the B cursor ...
Trumpeter plastic models of ships are produced in 1:200, 1:350, 1:500 and 1:700 scale, although 1:350 and 1:700 are dominating. Trumpeter has a cooperation with Japanese ship model manufacturer Pit-Road for kits in 1:700 scale. These kits are usually available under the Pit-Road label in Japan and under the Trumpeter label in the rest of the world.
An airline model aircraft collection in the 1:200 scale. Represented here are models of Delta, China Southern, Air Canada, South African Airways, British Airways and Virgin Atlantic airlines. The 1:200 scale is a modeling scale used in the model building hobby. A vehicle or building made in the 1:200 scale, fits 200 times inside its real-life ...
A scale ruler is a tool for measuring lengths and transferring measurements at a fixed ratio of length; two common examples are an architect's scale and engineer's scale.In scientific and engineering terminology, a device to measure linear distance and create proportional linear measurements is called a scale.