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 Topic Title: IV or IIII Topic Summary: Roman numerals Created On: 22 July 2013 03:16 PM Status: Read Only Related E&T article: Classic projects: H4 chronometer Linear : Threading : Single : Branch
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 22 July 2013 03:16 PM MFK Posts: 1 Joined: 22 July 2013 Anyone else notice the error on the diagram of the Chronometer designed by john Harrison? On a clock face 4 is usually shown as IIII not the normal Roman IV. Google some images of existing Harrison Chronometers to check. 22 July 2013 07:59 PM gkenyon Posts: 4954 Joined: 06 May 2002 This could be one of the most famous exceptions to the "IIII" rule: http://www.visitlondon.com/thi...ist-attraction/big-ben But yes, the H4 in the Greenwich Mueseum, of which the image in the article appears to be, does indeed have "IIII" rather than "IV". ------------------------- EUR ING Graham Kenyon CEng MIET TechIOSHG Kenyon Technology LtdWeb-Site: www.gkenyontech.com 26 July 2013 08:04 AM stevanjessica Posts: 8 Joined: 29 April 2013 Oh that is really a interesting question that why Chronometer designed by john Harrison shows IIII not the normal Roman IV. 05 August 2013 12:35 AM kengreen Posts: 437 Joined: 15 April 2013 Take a look at old clocks as found in ancient houses ref. National Trust. Both forms were in use. 05 August 2013 10:43 AM gkenyon Posts: 4954 Joined: 06 May 2002 Originally posted by: stevanjessica Oh that is really a interesting question that why Chronometer designed by john Harrison shows IIII not the normal Roman IV.One reason put forward, is that it's based on a French clock face designed for King Louis XIV (or should that be XIIII ? ), and it's for purely for artistic reasons. It splits the clock face into three equally-sized sectors of 4 numbers, going clockwise from "I", we have 4 numbers containing only I "I" (I, II, III, IIII), then 4 numbers containing "V" (V, VI, VII, VIII), then 4 numbers containing X (IX, X, XI, XII). Using IV instead of I breaks up this ordered approach. ------------------------- EUR ING Graham Kenyon CEng MIET TechIOSHG Kenyon Technology LtdWeb-Site: www.gkenyontech.com 01 September 2013 01:02 AM justyburns Posts: 8 Joined: 30 August 2013 This is brilliant. I'm 41 years old and I've never actually noticed that before, but I reckon Graham's explanation of artistic or even maybe aesthetic reasons makes the most sense. The thirds reasoning seems most practical to me from an aesthetic principal using artistic concepts.
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