Hi Andreas, hi all,springs: In the Rietz by sure are four, and in my 37 s I believe, too.This I needed to recheck if you want a 100% answer.The picture ...

Hi Andreas,were there four? I can't remember exactly, and contrary to my usual custom, I didn't document the process very well.With a little luck, I should still be able to ...

Thanks, Andreas.the sacrificed No21 had four circular springs as usual or differentshape and number?Have you looked for typography? Interesting? All copies the same patternso that it might be a bad ...

Hi Andreas,my pleasure.All of the slide rules mentioned below have non-magnetizable springs.For a long time, Nestler described the round springs in their catalogs as steel springs, but in the associated ...

Hi Andreas,thanks.What about the springs? Do all short sticker models have non magneticsprings including the Rietz or do they have magnetic springs? Do laterNestler Darmstadt have magnetic springs?Have you noticed ...

According to Guus Craenen the short stickers were used after 1938.From the feeling the No. 21 are a little stiffer, but that is only a vague feeling. (Maybe I should ...

PS: Short sticker: not rare after looking explicitely for them.How about the springs in short sticker 23's: Magnetic steel ordifferent? If different: Are the short sticker 23s as rigid,respectively non ...

Hi,Rietz comparision:Sticker: yes, yes,CI extension: no. One difference however: only the numbers are slightlyred, the scale is black. Aging?Short sticker models other than 21: I did not yet notice them ...

Noticeably, the Rho has been missing from the catalogs for a long time. In the slide rules, there are also some with early cursors where it was implemented.

Does the comparison with the System Rietz from ISRM also apply to the sticker on the back? That is almost as long as the slide rule and cut out in ...

Oh PS: No, the rho tick marks are not present on my Darmstadt. Only thetick mark at 0.01745 to simulate ST.

Hi Andreas, the length of the cm scale on the beveled edge of the ...

Hi Andreas,a comparison of the dimensions, respectively the construction should take place with models from the same period.Even if one can never be 100% sure how old the early Nestler ...

Hi,I just overlooked that there is also an intermediate version having (thesmaller diameter type) screws:https://www.ebay.de/itm/385230901855?hash=item59b18d125f:g:-lMAAOSwp39jcUAq&amdata=enc%3AAQAIAAAAwNKa1Z6POXwvc8%2BQbryvXzLc9NZoC22IiEYUL77p%2Bce2W9ShoK9Fp83jQw%2F1mvVAuiUJ2HHaM1Tccop215tOOPTi4Il9T7%2FoFQ0wSpsYAaCw7XEo2trwlPBqv8IsVjfrBSg6ntoNWtojOGRE%2FYG7Oc6tbmY06I%2Bg7sInPqur%2B6utSHpNCKRooAMPQ03VhQi1sZ87TYIEYgD6L6GUv3O1f4u%2BZaDrBdGwRPlaWMEGk5qqKdakDL078Fk9D8y8ifS6Ng%3D%3D%7Ctkp%3ABk9SR_bysYuQYgP is already in red, type is printed on the upper body part yet butstill starting ...

Hi,For I while I was scanning the internet for early Nestler Darmstadt copies.What I've found so far is, that all screw type Nestler Darmstadt thatI've found have short side windows, ...

I’m just delighted to hear that there is someone who collects them! It always hurt that the 3 or 4 Demonstration rules that Colin Barnes had never found a collection ...

Since this is my eighth demonstration rule, I am now quite familiar with the problems of transportation and spousal consent.The N4081-3 was located in Oregon and I am in Nevada.  Fortunately for ...

Congratulations, Fred!I always found the KE 4081-3 the generic standard engineer's slide rule forNorth America and the Aristo 968 Studio holding the same position for Europe.I know the darkening problem ...

Finding it was difficult. Getting it home must have been more difficult. Convincing you wife it is wonderful must have been more difficult still!Dean

Hi Fred,No mention of one on ebay.com in the last twenty years.Obviously most have gone for firewood.An amazing find.Rod