Archived posting to the Leica Users Group, 2015/11/03
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]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 >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >