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Both cylinders are covered in paper varnished with shellac. The second, outer, cylinder is printed with the slide rule's primary logarithmic scale in the form of a 50-turn helix 12.70 metres; 500 inches (41 ft 8 in) long with annotations on the scale going from 100 to 1000. A brass tube with a mahogany cap at the top is a slide fit into the ...
Till rolls are paper rolls for use in cash registers and Electronic Point of Sale printers. There are a number of different types available, including: Thermal: One side of the paper has a special coating that is heat sensitive. 2 & 3 ply: These rolls require an impact printer and produce multiple copies
Olivetti, Programma 101 General Reference Manual, hosted by the Old Calculator Web Museum, retrieved 2009-12-17. Internal pictures Old Calculator Web Museum. A simulator of the Olivetti Programma 101 "General Reference Manual". Old Calculator Museum. A Technical Description of the Olivetti Programma 101 with a picture gallery, by Alfredo Logioia
In 1884 Eckert sold the company to John H. Patterson, who renamed the company the National Cash Register Company and improved the cash register by adding a paper roll to record sales transactions, thereby creating the journal for internal bookkeeping purposes, and the receipt for external bookkeeping purposes. The original purpose of the ...
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Thermal paper (often supplied in roll form, and sometimes referred to as an audit roll) is a special fine paper that is coated with a material formulated to change color locally when exposed to heat. It is used in thermal printers , particularly in inexpensive devices such as adding machines , cash registers , and credit card terminals and ...
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A rolling ruler is a ruler that contains a cylinder much like a rolling pin inside, thereby enabling it to "roll" along a sheet of paper or other surface where it is being used. A rolling ruler can draw straight, parallel lines, and also has other instruments included, enabling it to do the jobs of a protractor and compass .