Cover Girl HP-65

[Frozen North]

A while after the HP-67 was introduced, I managed to scrape together enough money to purchase one although I had to sell my HP-25 for part of the cash needed. I got US$85 for that HP-25, heavily used but still in good shape.

At the college bookstore which sold me the HP-67, I also bought a super deluxe, 23 scale Pickett full size metal slide rule with holster. I figured it might be the last time a person could purchase one of these new and I think I was right. I still have it and it's fun to show it to a young person and then ask them what they think it does. The Pickett came with a well written instruction booklet and for amusement I worked through many of the exercises with my HP-67. Most of the numeric solutions given for the problems were printed with three digits of precision and the HP-67 showed that several answers were off by one in the third digit.

If I'd had the money back when a Curta pepper mill could be purchased new, I would have bought one. But I couldn't have resisted the temptation to take it apart just to see how everything worked.