I was doing a web search for material related to the Curta calculators, and
I found that there are two fan sites on the web by individual Curta collectors, one in Armenia.
A brochure on how to perform different calculations with the Curta noted that
a table was available to let you calculate easily cube roots accurate to five places
with it. I found a similar table for _square_ roots on both of the fan sites... but not
the table for cube roots!
In any event, on another page about the Curta calculator which was illustrated with
many photos, including two of the 3-D printed replica discussed here... there was
a comment below which I found hilarious.
In the comment, it was stated that the slide rule was rendered obsolete... when
Hewlett-Packard released the HP 41CX programmable calculator!
Why did I find that a side-splitting howler?
It certainly is true that pocket calculators made the slide rule obsolete. After the
HP 35 scientific calculator came out, the writing was on the wall for the slide
rule - and when basic, non-programmable scientific calculators started becoming
available for prices less than $30, then indeed it no longer made sense to buy a
new slide rule.
The HP 41CX, however, came out much later than that, and was quite expensive - it
was a programmable calculator which could also display words, as it used a 14-segment
liquid crystal display while still having a LED calculator form factor instead of being
completely flat like typical LED calculators. It came out too late, and was too expensive,
to have had any effect whatever on the fate of the slide rule!