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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.
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)
A partially disassembled Curta calculator, showing the digit slides and the stepped drum behind them Curta Type I calculator, top view Curta Type I calculator, bottom view. 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.
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).
Since the 1950s, 2 mm scale has been used to depict narrow-gauge prototypes on various track gauges down to 4 mm (0.157 in) [citation needed], but almost everything has to be hand-made, unless some Z scale parts are used. N scale: 1:160: 9 mm Name derived from "Nine millimeter"; this is the second most popular scale worldwide.
SME was founded by Alastair Robertson-Aikman [2] in 1946 under the title The Scale Model Equipment Company Limited to manufacture scale models and detail parts for the model engineering trade. [ 3 ] [ 4 ] It was During the 1950s the company moved away from model making to precision engineering, principally parts for aircraft instruments and ...
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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 ...