They use DPI Date: Sun, 15 Mar 2009 08:00:19 -0700 From: jeremiahmacgre...@rocketmail.com Subject: [USMA:43880] Re: Tyre (tire) sizes To: usma@colostate.edu
Strange how plotters and printers are not on the same page. I remember the old ink plotters that had pen widths in millimeters. One size was 0.35 mm. Even mechanical pencils have their lead sized in rounded metric. Always was that way. With laser and ink jet printers common, one would think the dot size would be naturally be in millimeters. Isn't it? Jerry From: Pierre Abbat <p...@phma.optus.nu> To: U.S. Metric Association <usma@colostate.edu> Sent: Sunday, March 15, 2009 1:53:04 AM Subject: [USMA:43868] Re: Tyre (tire) sizes On Saturday 14 March 2009 12:38:19 Jeremiah MacGregor wrote: > These all seem to be instances where a name is used but nothing is actually > measured. How do you measure your dpi? How often do people use dpi when > printing. I never do. I may choose font size, but these are just numbers > that really have no unit attached. The way to metricate dot size in printers is to set it to a multiple or submultiple of 25 µm, which is used in plotters. PostScript doesn't care; you can set the font size to 2.718281828 points and scale the image by 1.618034/0.70710678. Pierre _________________________________________________________________ View your Twitter and Flickr updates from one place – Learn more! http://clk.atdmt.com/UKM/go/137984870/direct/01/
