Slide rule: what is it, and how does it work?

Slide rule: what is it, and how does it work?

Postby koimaster » September 12th 2017, 8:40am

Few companies make logarithmic scales a feature of their watches. Certainly the best-known and a specialist in the field is Breitling, with the Chronomat and later the Navitimer, although it doesn’t have exclusive claim on this function. Ikepod, designer Marc Newson’s brand, has used it on the Megapode in 2003, as has Richard Mille for certain of its special-use watches, including the RM 039 Aviation from 2012, and Ventura for the V-Matic Loga. A quick survey reveals that the majority of watch-wearers whose timepiece has such a function, be it a Breitling slide rule or an E6-B type, never use it for the simple reason they can’t remember how! Here’s our guide to a mechanical system that smartphones have just about condemned to history’s bottom drawer…

https://journal.hautehorlogerie.org/en/ ... s-it-work/
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Re: Slide rule: what is it, and how does it work?

Postby foghorn » September 12th 2017, 8:47am

Totally useless on a watch. I don't think they aren't used because people don't remember how. They can relearn. The real reason is that the fucking numbers on the scales are so damned small that, even with better than perfect vision , it is impossible to make accurate and timely calculations.
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