Final Damn Rule
I think this will be the final virtual Pickett for the next little while. (This time I'm serious.) I've been scanning rules that are "gimmicky" or unique in some respect (mostly), and as far as I know, there are very few, if any gimmicky Picketts left. So, unless I start collecting some other brand (Ghod forbid), then there aren't any more good rules to virtualize.
This one's a neat one: Pickett N909-ES SIMPLEX TRIG RULE with METRIC CONVERSION. It comes with a set of gauge points on the slider that lets you convert between inches/cm, pounds/kg and all that. It also has a Fahrenheit/Celcius scale and a novel scale for switching from decimal hundredths to fractional 64ths.
Unfortunately, this rule wasn't intended for Canadians -- the temperature scale only goes down to -25 C.
(The layout of the scales really drives home the point that multiplication on a logarithmic scale is done by merely adding distances.)
This one's a neat one: Pickett N909-ES SIMPLEX TRIG RULE with METRIC CONVERSION. It comes with a set of gauge points on the slider that lets you convert between inches/cm, pounds/kg and all that. It also has a Fahrenheit/Celcius scale and a novel scale for switching from decimal hundredths to fractional 64ths.
Unfortunately, this rule wasn't intended for Canadians -- the temperature scale only goes down to -25 C.
(The layout of the scales really drives home the point that multiplication on a logarithmic scale is done by merely adding distances.)
13 Comments:
At 1/17/2006 3:58 PM, Richard Shoemaker said…
Yeah! they are long gone.
I still have my Picket model N 531-ES
issued to me by CREI with thier letters on reverse side.
At 1/17/2006 4:52 PM, Derek said…
It seems that Haloscan has some flaws. In particular, it wouldn't notify me when someone posted, and it also deleted old post after a while. Here, for archival purposes, are the old Haloscan comments. This thread will now be the generic comments of the virtual slide rule page.
Derek.
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We have a seven foot Pickett slide rule obviously used for teaching. It is a copy of a N 1010-ES trig rule.Is there any value to a piece like this? How can it be sold? It needs to be where someone can appreciate it.
Woody Vosler | 11.15.05 - 2:05 pm | #
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Hello Derek,
Your virtual slide rules are simply superb. They are also very instructional. I have a Pickett N3-ESI and always wanted to try the differences on the N4 like DF/M scales and you made it possible. I also wanted to try the 525 stats slide rule for a long time.
There are several excellent slide rule collections on the net. For example Mr. Tomozawa's collection which is beautifully scanned. See:
http://www5b.biglobe.ne.jp/~tomozawa/
The technique you are using could be applied to these collections to make them even more vivid and useful, especially to youger people who did not use a slide rule at school or work.
Happy new year.
Zvi
Zvi | 12.30.05 - 4:44 am | #
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Hello Woody, sorry for never answering you (I think I'll do something else with this comments box so I can be alerted when someone posts something.)
From what I've seen, the huge wooden slide rules are occasionally sold on eBay, and they go for hundreds of dollars sometimes.
Derek | 01.17.06 - 5:44 pm | #
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At 4/26/2006 1:37 PM, Anonymous said…
Thanks for going through the trouble to do this. You virtual slide rules are great.
At 4/26/2006 2:52 PM, Derek said…
No problem.
At 12/04/2006 2:47 AM, Anonymous said…
Those virtual sliderules are simply Cool.
I would like to make a Wheel ruler though - would anyone here know if THAT is possible.
Best Regards
Martin Vinther
You can reach me on Mav@tele2adsl.dk
At 12/04/2006 10:23 AM, Derek said…
Martin, I looked into circular rules, but it seems that JavaScript that's found in web browsers is only capable of up/down, left/right motion, but no rotation.
To create a circular slide rule for the web, you'd have to use either "Flash" or "Java" and write an application for it.
(I think I saw a circular SR on the internet once, but I forget where...)
At 6/14/2007 9:39 PM, Anonymous said…
Hud? I find myself using your virtual rules more often than my real one. Thank you very much! I know I owe you something!
Mansing
At 6/14/2007 10:17 PM, Derek Ross said…
Thanks, Mansing. Don't worry about owing anything... the simulator is on the house!
At 7/24/2007 4:31 PM, Stephen F. Combs said…
Great site! IF I hunt hard enough, I can probably find 5 of the sliderules you model! Haven't USED a sliderule in years, but I've still got (somewhere) the 6in aluminum and three different 10in ones (as well as a 20in one that I've never seen since I bought it!)
At 7/24/2007 6:35 PM, Derek said…
Thanks! Using them for the novelty of it is sort of neat, but to actually use it for everyday math is a pain in the butt. I know why everyone enbraced calculators!
At 7/26/2007 10:44 AM, Anonymous said…
I just received the comments on operating the slide rule, and glanced through the first example on Simple Multiplication Rules.
In the example regarding the square root of 4500, the last comment states "we know that "70^2 = 3600..." . This should be 4900.
At 8/23/2007 1:01 AM, Mansing said…
On downloaded version of the slide rules, Derek stated in his gallery page: "For some reason, IE gives a security warning before you can use it. . ."
Here I found a solution: The problem is due to IE that assumes a high security level for local files. By placing a comment line like the following one on top of the html file (before the [html] tag) solved the problem,
[!-- saved from url=(0060)http://www.antiquark.com/sliderule/sim/n3t/virtual-n3-t.html --]
Two important notes:
1. There is a hidden control-M (^M) at the end of the above magic line. Without that control-M, this trick won't work.
2. change "[" and "]" to "<" and ">" in the magic line. This blog disallows html look-alike tokens.
Mansing 2007-08-23
At 8/23/2007 8:28 PM, Derek said…
Thanks for the tech support Mansing. I'll mention it in the sliderule page when I have a few extra minutes.
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