|Re: OT: My Slide Rule Collection|
Message #8 Posted by Mike Morrow on 23 Apr 2013, 9:26 p.m.,
in response to message #3 by Jim Horn
When taking a US Air Force orbital perturbations class in 1976, I brought my Post slide rule to the final exam, getting quite a laugh from the others when I said I brought it as a backup to my then-new HP-67.
When I was taking the six-month academic portion of the U.S. Navy officer's nuclear propulsion training in 1974, slide rule use on tests was required...calculators were prohibited. The same policy had been in effect at Georgia Tech, from which I graduated in 1974.
The naval nuclear propulsion school delivered the finest course on slide-rule usage (all the tricks and shortcuts) that I have ever seen. My Dietzgen N1725L could do things I never dreamed, even though I had spent four years with it at Georgia Tech.
You must have gotten one of the very first HP-67 units if you had it in 1976. I was unable to get one until mid-1977, even after going to all the authorized dealers I could find in the Boston area, including MIT and Harvard Coops, for months.
The slide rule got me through college - I may have been the only EE graduate there in 1975 to not have a calculator.
In 1974, very few students at Georgia Tech had a calculator unless it was something like the SR-10 or SR-11 with only a square root, square, and inverse as its scientific functions. The SR-50 was not yet available, and that most-desired HP-45 cost the 2013 equivalent of $1900. I had only a four-function Bomar 901B when I graduated.
But I was waiting for affordable programmability and bought my first, the HP-25, a month later when it came out.
I waited to buy the TI SR-50 in December 1974. It remains one of my favorite TI calculators of all time. I didn't get a programmable until May 1977...the HP-67.
I still have the Post, and a 5 inch circular one somewhere...
I still have my Dietzgen N1725L that I purchased new in 1969 for $35 (very expensive...that's equivalent to $222 in 2013).
Today, when one can get an HP 50G for under $100, and the new HP Prime for $150, it amazes me to no end.
Edited: 23 Apr 2013, 9:34 p.m.