Your description sounds like the Engineering Instrument rules (in Peru, Indiana), which you can see here http://www.sliderulemuseum.com/Lawrence.htm#EngInst on...
Hello Hubert, I enjoyed visiting your website. You have a really good start on your FC collection. Thanks for all the additional information. I have bookmarked...
Hi Steve, When using a search engine for a particular rule, what happens frequently, is that you wouldn't capture all the rules you seek ( I know that you are...
I have some FCs that I plan to list on my site for sale sometime in the future. Right now my prime focus in the business. Keeping check every few months. Jay...
According to my notes on ebay rules "seen but not purchased", another Calc-Slide showed up several years ago. It sounds identical to yours. My notes say--...
Have any of you ever seen a non-base 10 slide rule. I want to make a base 16 slide rule, it would also be cool to have if it exists. I understand all the...
... Sounds like one I got from my father when I entered HS, but mine was Lawerence, and was eight inch. It dates to about 1922, and was a student rule. Dad got...
... The Gilson circular had a binary scale, but it was base ten. ... slide ... Best way is with CAD, such as DeltaCAD (shareware, about $50) from Midnight...
The Oughtred Society Swap Sheet Online The swap sheet has been updated for October, and is now available for viewing. Go to : www.oughtred.org and on the left...
Thanks to all who responded regarding my Calc-Slide. The instrument does bear a general resemblance to the painted wood Lawrence rules. Other points of...
... Good, but!: The 1003, as well as the Versalog, has many more functions than that. The number of functions for a SR should also include the inverses and...
Take a look at this item on eBay. 290035192348 The auction is for a slide rule (Graphoplex 640 w/ sleeve and instructions). The wonderful illustration is...
If you can't do it by hand what tools do you have? http://msdn.microsoft.com/vstudio/express/support/install/ lets you copy Visual Studio 2005 Express Editions...
Greetings All Can anyone help me identify a recent acquisition please? It's a marine rule 30 cm long, closed frame simplex with operating intructions on the...
david farrow
farrowd@...
Oct 3, 2006 12:20 am
31276
Hi Don, How are you doing? Have you found a Graphoplex "Electronicien" yet? You may already know this, but I'll post it anyway. I wanted a British Thorton...
The description of the rule having a "stub extension" sticking out on the right end when the scale indices are aligned sounds much like early Dietzgen rules....
No, the "Pat. Pend." mark, which appears to be common on Lawrence rules, is absent on the Calc-Slide. Some other differences, based on the Lawrence models on...
I have done business with Tinopo in the past: he is a very likebale guy and I would recommend him to anyone. The Concorde picture is a catalog cover that he...
The upward pointing arrow positively identifies this as GB military. Could you post a picture of the latitude scale? it might have been used for calculations...
I see a voltage divider, a pi filter, and what appears to be a triode vacuum tube. The rest is of another discipline. Vacuum tubes on the Concorde???...
Hi, Am I missing something? Concorde was designed by a huge army of engineers on both sides of the English Channel (Thousands). Probably almost as many slide...
I have added several images of a "Genuine Calc-Slide" (not to be confused with any cheesy imitation Calc-Slides) to the Photos Section, in the "Calc-Slide"...
Ronald: This is uncharted territory for me, so apologies for anything pear-shaped. David Farrow ... From: "Ronald van Riet" <rvriet@...> To:...
david farrow
farrowd@...
Oct 3, 2006 7:24 pm
31285
A Versalog manual, copyright 1951, which I recently obtained has an ERRATA page attached to the back flysheet. It shows quite a few errors which I had never...
Yeesh! Puts me in mind of the yardsticks (or, for our non-USA readership, short meter sticks) made of soft, almost balsa wood that businesses used to give...
I have a 640 and maybe it is an older version. The scales are not exactly the same as the one shown in the ebay auction that has a scale added which is the...
I'm sorry I wasn't clear. I never meant to say that the seller is making a historical claim. I was just glossing the marketing gimmic. :-) Règle à calcul...
... signifies that it was British government property, not necessarily military. Some Home Office property was marked with the broad arrow, including prison...
The 640 version with that 'sq-root' scale (actually a regular P scale) along with its other scales, makes it a Darmstadt type rule. Since the Darmstadt is...
... Years ago I saw mention of a hexadecimal slide rule in use in the 60's. It apparently had features to help work with IBM floating point numbers. The person...
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