(j3.2006) Retro cool to go with your Fortran compiler

[Van Snyder]

On Wed, 2010-12-15 at 04:58 -0800, Jerry Wagener wrote:
> alas, one can compute with it to only about two significant figures
> (in some cases you can interpolate close to three significant figures)
> - guess that was good enough for much early engineering work. 

There was an observatory in Germany that had a 20-meter slide rule with
a magnifying cursor.  It was reputedly good for six digits.