slide rule

Walter Shawlee chanced upon a slide rule from high school while looking through a drawer at his home in Kelowna, British Columbia.

For about 350 years, humanity’s most innovative hand-held computer was something called a slide rule.

With an abacus and a slide rule, earlier helpmeets, you had to know something of the mathematical process.

Over a four-decade career that began with slide rules and moved into the age of computer modeling, Ms. Norwood became known as a resourceful problem solver who often hit upon simple but effective solutions.

Over a four-decade career that began with slide rules and moved into the age of computer modeling, Norwood became known as a resourceful problem solver who often hit upon simple but effective solutions.