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Two wooden yardsticks with brass ends, in inches and division of yard for half, quarter, eighth and sixteenth A folding metre-stick carpenter's ruler with millimetre divisions and numbers in centimetres. Fully extended it measures 2 metres. In countries in which the metric system is used, the scale typically contains only a metric scale.
A variety of rulers A carpenter's rule Retractable flexible rule or tape measure A closeup of a steel ruler A ruler in combination with a letter scale. A ruler, sometimes called a rule, scale or a line gauge or metre/meter stick, is an instrument used to make length measurements, whereby a length is read from a series of markings called "rules" along an edge of the device. [1]
Robert Gair was a Scottish printer and paper bag maker who invented the folding carton in 1879. [1] Born in Edinburgh, Scotland in 1839, he emigrated to the United States at age 14. Gair invented the paperboard folding carton by accident when a metal ruler
Gustav Ullrich came from a family that had moved from Diedesfeld to Maikammer around 1800. His father was Franz Ullrich, the brother of the inventor Anton Ullrich.Together, the Ullrich brothers developed the joint spring lock for folding rulers, which they patented in 1886.
A resident of a southwest German town working on a construction project unearthed a stash of medieval coins minted around 1320 AD. The value of the roughly 1,600 coins recovered was deemed enough ...
In 1851 Anton Ullrich invented the folding ruler, and in 1887 obtained the patent for the springed hinge of the folding ruler. The "Gebrüder Ullrich" company expanded quickly and later built another factory site in the neighbouring village of Kirrweiler .
Farrand's new design was a concave/convex tape made of metal which would stand straight out a distance of four to six feet. This design is the basis for most modern pocket tape measures used today. With the mass production of the integrated circuit (IC) the tape measure has also entered into the digital age with the digital tape measure.
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