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The rather uncommon [citation needed] 40 mm figure scale wargames figures fit approximately into this scale. 1:45: 6.773 mm This is the scale which MOROP has defined for O scale, because it is half the size of the 1:22.5 Scale G-gauge model railways made by German manufacturers. [citation needed] 1:43.5: 7.02 mm: Model railways (0)
The calculator was still listed in Stanley's catalogue in 1976 [note 5] when model 1 cost £60 (£545 in 2023) and model 2 was £61.25. [42] In the United States the instrument was marketed by Keuffel and Esser who only supplied model 1. They described it as "Fuller's Spiral Slide Rule" and, over the period it was sold between 1895 and 1927, it ...
For example, aligning the rightmost 1 on the C scale with 2 on the LL2 scale, 3 on the C scale lines up with 8 on the LL3 scale. 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).
A suanpan (top) and a soroban (bottom). The two abaci seen here are of standard size and have thirteen rods each. Another variant of soroban. The soroban is composed of an odd number of columns or rods, each having beads: one separate bead having a value of five, called go-dama (五玉, ごだま, "five-bead") and four beads each having a value of one, called ichi-dama (一玉, いちだま ...
The spacing between holes was 1 ⁄ 2 inch (12.7 mm) and the hole diameter was 1 ⁄ 6 inch (4.3 mm), but the nuts and bolts included were metric. From the mid-1910s, in the US, there was a system called Erector, invented by A.C. Gilbert. Erector was largely compatible with Meccano.
Some 1:43 scale diecasts like the Italian Polistil in the late 1960s with their Politoys M-Series, used a metal "wire" wheel, and Solido did as well in the early 1960s, but then beat that in their 100 and GAM 2 series in the 1970s by impressively copying the wheel styles from the actual vehicles. Thus Solidos usually had a unique wheel style ...
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 ]
Model engineers often join together to form model engineering clubs and societies. [20] The first of these to form was the Society of Model and Experimental Engineers based in London, UK, in 1898, "along similar lines to the model yachting clubs" then popular. [21] [22] By 1948, "well over a hundred local clubs and societies" had been formed. [23]