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In the 1970s the National Bureau of Standards (NBS) defined a set of convenient numbers to ease metrication in the United States.This system of metric values was described as 1–2–5 series in reverse, with assigned preferences for those numbers which are multiples of 5, 2, and 1 (plus their powers of 10), excluding linear dimensions above 100 mm. [1]
preferred numbers: Image title: Comparison of preferred numbers of the 1-2-5, Renard and f-stop series on a logarithmic scale divided into 40 equal intervals (blue) by CMG Lee. Width: 100%: Height: 100%
An NBS technical note describes that system of convenient metric values as the 1-2-5 series in reverse, with assigned preferences for those numbers which are multiples of 5, 2, and 1 (plus their powers of 10). Linear dimensions above 100 mm were excluded (because such measurements are defined by another set of rules).
Renard series are a system of preferred numbers dividing an interval from 1 to 10 into 5, 10, 20, or 40 steps. [1] This set of preferred numbers was proposed ca. 1877 by French army engineer Colonel Charles Renard [ 2 ] [ 3 ] [ 4 ] and reportedly published in an 1886 instruction for captive balloon troops, thus receiving the current name in ...
Federal Taxpayer Registry (Spanish: Registro Federal de Contribuyentes), Mexican tax identification number Financial transmission right , in electricity markets Formylmethanofuran—tetrahydromethanopterin N-formyltransferase
In NANP telephone number specifications, the letter N represents a numeral from 2 through 9, while the letter X represents any numeral. Thus, NXX is a number from 200 through 999, while XXXX is a range from 0000 through 9999. The first three digits of a telephone number are the numbering plan area code (NPA code, or simply NPA).
The steps to add new access numbers may differ depending on the version of AOL Dialer installed on your computer. If you're using ACS, you'll want to download the latest version of AOL Dialer here. Connect an access number to AOL Dialer. 1. Click Connection Settings from the mail AOL Dialer page and follow the prompts. 2.
Download as PDF; Printable version; In other projects Wikidata item ... E6 series may refer to: E6 series (preferred numbers), a series of standardized resistor and ...