Concise Ruler Circular Calculator 27N 100805

A plastic slide rule got me through my science classes in the 70s and I have never lost my fondness for them. As an aviator, I recognize that the E-6B manual fight computer is a circular slide ruler with time/speed/distance graphics added to the face. I still like to play with them, and I always wanted a non-aviation model. When I saw this in Amazon, I had to have it and I am glad that I bought it. It is very smooth and it is easy to align the index marks accurately. I keep near my easy chair and grab it when I want to cross check something I see on TV etc. I also own a very nice Pickett model in excellent condition that I round in an antique store.

Slide rules rule.

Not must information on the Internet or YouTube on how to use all capabilities of the slide rule. Instructions would help so I could use all features.

The marking is concise (pun not intended). I have been looking for a slide rule for a while, and I don't see many places that have it.I only use this for multiplications and divisions, but that's plenty useful.Amazon packed this item well (this item and this time) in a hard cardbord envlope, and not demaged during shipping like my other items.

道具を使うには知識と熟練が要るということを改めて理解させてくれる、とってもアナログな製品。有効数字を体感できるものだと思うし、軽く、コンパクトな製品なので常用でけるようにしたい。

概数として計算しているだけなので、精度の具合までは分かりませんが、便利です。

大体が分かる

丸形計算機大変便利。丸形わお客様の全面にて計算できますし相手にも手持ちの計算器より違和感ないです。。