It's the key sequence to enter on a calculator (it threw me off for a while, too!) <div class="gmail_quote">On Sat, Apr 9, 2011 at 3:39 PM, Mike Spalding <<a href="mailto:mike.spalding1@frontier.com">mike.spalding1@frontier.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">But there's still an extra equals sign, no? On 4/9/2011 12:34 PM, John Delacour wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> I wrote: > The tension in pounds is calculated by punching in the following: > > l x f x d x = Ö 20000 = > > where l is the length in CENTIMETRES and f is the frequency in cycles per > second and d is the overall diameter in CENTIMETRES. I repeat centimetres, > NOT millimetres. I forgot to specify the right character set in my last message, so the division sign got mangled. Here is the correct sequence: *l x f x d x = ÷ 20000 =* JD </blockquote> </blockquote></div>