Analysis of information sources in references of the Wikipedia article "Number sign" in English language version.
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The Italian libbra (from the old Latin word libra, 'balance') represented a weight almost exactly equal to the avoirdupois pound of England. The Italian abbreviation of lb with a line drawn across the letters was used for both weights. The business clerk's hurried way of writing the abbreviation appears to have been responsible for the # sign used for 'pound.'
#—Preceding a figure (thus, # 10) means number.
#—After a figure (thus, 10 #) means pound.
Make the (#) pound or number sign thus: 37⁺ = 37 lbs. ⁺37 = No. 37.
APPENDIX I. SIGNS AND SYMBOLS. [...] #. . . . . . .number (written before a figure). [...] #. . . . . . .pounds (written after a figure).
Recently there were sent by mail to the Kansas banks engraved reproductions of a draft issued by an Ohio bank on its New York correspondent for ten dollars which had been raised to ten thousand dollars and successfully negotiated in Buffalo, New York. It was sent out as a means of advertising a check protecting machine but it will serve us for illustration. I presume many of you, and perhaps all of you, have seen it. The number sign used immediately following the word ten in the body of the draft and part of the line drawn along the unoccupied space from it to the word dollars in the right hand margin had been removed with acid and the word thousand written in. The number sign following the memorandum figures $10 in the end margin had likewise been removed and three ciphers added. The number sign had then been added after both the added word and the added ciphers, so that the draft in its altered form read Ten Thousand#———— Dollars in words in the body and $10000# in figures in the margin with the only significant peculiarity in the make-up of the draft, the number sign following both the written words in the body and the memorandum figures in the margin, relatively in the same position as in the draft as originally issued.
Number or Pound Sign (#) 1. Before figure for number. #16. 2. After figure for pound.
In Australia, however, it was better known as the 'hash' sign and only used to mean 'number'.
It is best to use the 'number mark' for plus; the hyphen for minus, and two hyphens for the sign =
In Australia, however, it was better known as the 'hash' sign and only used to mean 'number'.
It is best to use the 'number mark' for plus; the hyphen for minus, and two hyphens for the sign =
