Hi All,
I still use a slide rool.
You are still required to know how to use one for many aviation exams. Have a look at
http://www.casa.gov.au/fcl/exams/cyber/material.htm
"Nav Equipment
When permitted, the term 'Nav equipment' includes:
Dividers
Compass
Protractor
Ruler (or straight-edge)
non-electronic 'aviation wind triangle and circular slide rule' computer. eg Jeppesen Sanderson CR or other brands of similar type or a manual slide rule"
"(Electronic flight planning device/computer is NOT permitted in place of Jeppesen CR or a manual slide rule)"
....
"The ATPL exams"
(Airline Transport Pilot Licence - ie to fly a 7X7 etc for Qantas etc)
"6. APLA
Required/to be supplied by candidate
Navigation equipment
B727 Performance and Operating Handbook
CAO 20-95.2 "