Hi Tom, Very nice rule you have found, thanks for sharing the scans. Herman's catalogue has a similar rule (match 2501) but with non-decimal degrees. D and NA:...
... (funny, ... NLs were never intended to be used for wind calculations (even though manual describes a procedure for this) since it is awkward and ...
Draw equilateral triangle A, each side length = 1 unit. Draw equilateral triangle B inside of A such that area of B = one half of the area of A, and each...
Hello, Pano... Eureka! With the clues you gave, plus a careful examination of the formulae on the back of the rule, I have figured out both of these scales! ...
Purely by chance, I was browsing a web site called "Web Sites That Suck", and lo and behold there was our old friend, "The Slide Rule Universe" as the 2006...
To Andrew, Walter, and Other Interested Group Members: Gee, I'd be happy to have my web site be the winner of anything. Actually, I'd be happy if my site were...
Hi, everybody... I'm sure anyone who has tried scanning slide rules has noticed that any element of the slide rule exhibiting specular (i.e., mirror-like) ...
Hi, everybody! Does anyone know where I might find instructions for the Keuffel & Esser "TimeSlide"? Or does anyone happen to know how it works? I've found ...
Q: "Are French degrees used anywhere at all any more? And ever outside of France?" A: The 400 degree circle is now more than 200 years old. It was one of the ...
I think you're out of luck on this one. Scanners are designed for diffusely-reflecting surfaces, mostly white paper with black ink or colored ink on. The...
What you call French degrees (I did not know this name) is called here "Grades" (400 in a circle - 100 per quadrant). This must be verified with experts, but...
Philippe, neither have I heard the term "French degrees" before. Internationally, it is called 'gons' or 'gradians' (occasionally I have seen 'grads'). It is...
The HP 45 calculator was the first handheld calculator I saw with the option of using radians or grads. That was in 1973 when I lashed out on one and felt very...
Hello Dick, Walter, and everyone else in SRG! I don't care what anyone says; whenever I'm feelin' blue, a trip to the Slide Rule Universe always perks me up! ...
I just bought a Faber-Castell 67/39 slide rule; one of their inexpensive plastic slide rules that were often used by companies as a business gift. This one is...
The line segments are: (1/2 - 1/(2*sqrt(3)) and (1/2 + 1/(2*sqrt(3)) approx (0.2113,0.7887) Inscribe an equilateral triangle tilted counterclockwise...
Great work and explanation ! Gary Flom ... From: apm03 To: sliderule@yahoogroups.com Sent: Tuesday, April 03, 2007 2:29 PM Subject: SR Re: Prob : Nested...
I have a dim memory of a Pickett slide rule that had a model number like that. It was a special deluxe presentation model. It wasn't in their regular catalog. ...
You may be on to something. I have an old Sharps EL-520D calculator that as rad, deg, and grad settings. It converts the 400 to 360. Never knew what that...
Tom, I would agree with Ray Brohinsky, that a photograph with diffused lighting might be the way to go. Probably best with a tele lens at the furthest range...
My most recent burglary of a week ago was mostly slide rules as far as I can tell. They got 4 long rules, a 4181-5, 4053-5, 4045, 4051, 4102. Most of my...
Charlie, I still find the thought of someone stealing slide rules as being really odd. Was anything else taken? Had there been any local publicity about your...
Hi Dick: Yes, this is strange burglary. How would someone find a fence or easy outlet (other than eBay) for the disposing of slide rules? We all need to be on...
A further thought: It is still a best-buy for high-resolution, high-quality digital images to use real film in a "real" camera. The result can be enlarged to...
Ray, I certainly agree with you on the use of a camera for shooting slide rules (and other art for that matter). In particular, use a diffuser umbrella...
A slice is cut from a loaf of bread fresh out of the oven. The slice is 195 degrees C. The room temp is ( a constant ) 22 degrees C. After 1 minutes, the slice...
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