I can't speak to the techniques of graduating and figuring 20th century slide rules, but the methods used to graduate and figure folding measuring rules with...
It is not only the 'old' rules which exhibit typos. There was an error in the original Birmingham Wire Gauge (BWG) table on type 1 Fullers ( used in converting...
Now I will have to check my slide rules for "typos." A new type of typo is common these days: correctly spelled, but inappropriate words in articles from...
42886
Paul Anderson
wackyvorlon@...
May 25, 2012 1:00 am
There is a website called "Damn you autocorrect!" that frequently posts these errors. Sent from my iPad...
Dear Ian One of my Hemmi 153s has two date stamps, next to one another: LH BL with that spacing (as valid date stamps they would translate to August 1961 and...
Andrew notes, "The irony; "typo's" is plural in this context, and so should not have an apostrophe." * My electromagnetics professor at Virginia Tech spent a...
Dear All As someone who designs optical systems, it can be nigh impossible to shift even a decent fingerprint from a glass surface. At work (in production,...
Hi, Rod, I don't have a 4093, but it makes sense that the same difference that is found in different vintages of the 4092-3 family would appear in the 4093...
My personal favorite remains a batch of Pickett rejects and experiments I bought as a lot long ago. it had such interesting things as a yellow N500T and a...
42893
Paul Anderson
wackyvorlon@...
May 26, 2012 2:13 am
I've just come into possession of a Fowlers Universal Calculator that seems to need to repair. Does anyone know how best to go about opening the case? The gear...
Slightly off topic, I am reminded of the many typos that were in the text we used in Paramedic School. $500 for 5 volumes teaching us how to take care of sick...
I have this nice loglog, folded and regular scales (19 tot) bamboo slide rule that has no logo, only "MADE IN U.S.A." (no quotes) on it. Does anyone have a...
If it were mine - I'd ask about two grand for it - you never know! From: sliderule@yahoogroups.com [mailto:sliderule@yahoogroups.com] On Behalf Of Robert Baer ...
On the next to last page of the 1926 Edition of K&E's "The Log Log Duplex Slide Rule," the picture of the Merchant's (Calculating) Slide Rule is displayed...
Rod V. says, " ... you have to rub really HARD and long to get the excess ink off (I guess they don't call it "permanent" marker for nothing!). ..." Have you...
Shoot; i have a Castell Universal with both German and English manuals and am not asking _that_ much.....
42900
sliderule@yahoogroups...
May 27, 2012 7:59 am
Greetings, There are a lot of things we do on this list which may not be obvious to newcomers, and some of us veterans need reminders from time to time, too....
42901
sliderule@yahoogroups...
May 27, 2012 9:03 am
Greetings, There are a lot of things we do on this list which may not be obvious to newcomers, and some of us veterans need reminders from time to time, too....
... Don't use those on a cursor, or anything transparent. These pads are actually a fine abrasive, and the cursor will end up cloudy. -- Stefan Vorkoetter ...
Paul, In Vol. 11, No.2, Fall 2002, p.7 of the Journal of the Oughtred Society the 3 3/8 inch "Universal", "12-10" and four varieties of the "Textile Type B"...
My copy of Fowler's universal Calculator has a shiny (chromed?) rear case with three screws (fastening it to the internal mechanism?). The back case is...
Whoops! the pictures referred to in my previous post are at: http://www.dpreview.com/galleries/2321697386/photos/1990721/1-fowler-universal-case ...
42906
Paul Anderson
wackyvorlon@...
1:30 am
The tool is termed a pin spanner. A pair of snap ring pliers should work in a pinch. I have a pretty well equipped machine shop at my disposal, so when I get...
42907
Paul Anderson
wackyvorlon@...
1:30 am
By the way, I have found that once the mechanism is out, it's very fiddly to get it back in place. It's not unlike putting a clock movement back together....
... Paul, In reponse to your request and Cyril's summary of previous messages. I have a long scale calculator which has scales on both sides. Other owners have...
... Right, curiosity got the better of me. I have just had another look at my Fowler, in bright sunlight (yes, in East Yorkshire!) using a strong magnifying...
I was looking through some old ARGYLE SWEATER cartoons (by Scott Hilburn), and spotted one of astronauts on the moon. The punch line is HOUSTON WE HAVE A WORD...
42911
Paul Anderson
wackyvorlon@...
1:39 am
On mine, the bezel is quite thin while the glass is thick. I caught the nail of my index finger under the edge of the bezel, and pressed my thumb on the...
42912
Paul Anderson
wackyvorlon@...
1:39 am
There is a tool known as a case-back opening knife used by watchmakers on cases made like that. It goes into the gap. Sent from my iPad...
