[Leica] Old stuff

[Douglas Barry]

Larry, I have a maths grenade and a IIIc too, but no slide rules. I was 
taught how to use one in school, but, in banking, we didn't use them. 
Instead, they just allowed the rules to slide. Et voila! everyone got 2008.

I see your Curta has coloured buttons and thus must be a Typ II ? Mine is a 
Typ I with a serial no 20075 which makes it 63 years old. It's still working 
perfectly, and it, and its case, are in mint condition. I love the thing. 
Mind you, I see they're getting insane prices on eBay these days. Here's a 
pic of it.
http://gallery.leica-users.org/v/DouglasBray/Oddments/MyMathsGrenade.jpg.html

Douglas

----- Original Message ----- 
From: "Jim Nichols" <jhnichols at lighttube.net>
To: <lrzeitlin at aol.com>; "Leica Users Group" <lug at leica-users.org>
Sent: Tuesday, November 03, 2015 4:53 PM
Subject: Re: [Leica] Old stuff


>I can match you with a IIIa, IIIf and both slide rules.  Never used a 
>circular rule.
>
> My 10" rule is a K&E Trig, because the college bookstore was sold out of 
> Deci-Trig rules.  My small one is a yellow P&E that served me many nights 
> before our wind tunnels got true digital instrumentation.  And not a 
> battery to be found in any of them.
>
> Jim Nichols
> Tullahoma, TN USA
>
> On 11/3/2015 10:44 AM, Larry Zeitlin via LUG wrote:
>>   The discussion and photos of the Babbage Differential Engine of a 
>> couple of weeks ago prompted me to dredge the pictured 50+ year old 
>> artifacts from the bottom drawers of my desk. Many more are still 
>> interred there. All still work as well as they did when they were new. No 
>> batteries are required. Bear in mind that most of the bridges, all of the 
>> WW2 airplanes, and all Leica lenses prior to the Summicron were designed 
>> using slide rules and mechanical calculators. Will the Leica SL still 
>> work in half a century?
>> http://gallery.leica-users.org/v/Larry+Z/Old+stuff.jpg.html
>> Larry Z
>>
>>
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>
>
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