Chris Keenan wrote: "Even more bizarrely, such cable can be bought from European manufacturers in 100 m etc. reels, but the largest reel is '305 m'!! I can find no rational explanation for this."
If we assume a tolerance on large reels of �5 m, providing a nominal 305 m should guarantee that nobody gets less than 300 m. The really lucky ones will, of course, get 310 m. (By the way, in case it doesn't come through correctly, that's a plus-or-minus symbol in front of the 5.) Bill Potts, CMS Roseville, CA http://metric1.org [SI Navigator]
