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Your cart is empty.This is the most popular circular calculation scale, which is not added, subtracted... It is a basic calculation scale that can easily calculate multiplication, division, square, and triple, and is used in all fields. Calculation type: General exclusion, proportional (exponent hundred ratio), square and cu. Reverse side: Length and area, volume, mass, temperature, pressure, speed, etc. are listed for unit conversion Scale: D, C, CI, A, K (surface) Dedicated storage case, instruction manual included.
Kowji
Reviewed in Japan on March 25, 2025
計算尺を探してましたが、現在安いのはこれしか無いようです
YAM
Reviewed in Japan on February 10, 2025
電卓が普及してはや半世紀。現職の教員の中にも計算尺を知っている人は各校数えるほど。そして、使える人は1人もいないというのはざらになって久しく…。有効数字の考え方は今も昔も学ぶが、実験での読み取り操作は温度計程度に限られている。なんとなく理解はしているが…という状態をマシにするには、アナログ機器の読み取り機会を増やす必要性を感じていた。映画『風立ちぬ』で計算尺を目にしてから、ヘンミ式を探していたが、コンサイスの方が乗除算はしやすそうだ、ということで本品を購入。乗除算の桁数の削減について、感覚的に「あっ、そうだよね」という感じを得られる、確かな予感は得られた。
donald
Reviewed in the United States on May 25, 2023
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.
jhkjh
Reviewed in the United States on November 4, 2023
The 28N is handy because it fits in a shirt pocket. The C and D scales are great for conversions and great for travel calculations (it is basically e6b flight computer pilots are trained on) this does come with English instructions. I also use this in the kitchen for doing unit conversions and scaling servings in a recipe. For example the recipe is for two servings and I want nine. I dial it in and can look up how much of each ingredient to use as I’m cooking (instead of stopping to pound out each conversion manually on a calculator).The 270 is a great slide rule. Unlike the 28N this has a great quality tactile feel. The english manual can be downloaded from the Slide Rule Museum website are really good. They go over some nifty tricks including ways to solve various trig problems.The 300 is of the same quality as the 270 but also has LL2 and LL3 scales. Everything is aligned properly. This is now my favorite. The trig scales are read differently on the 300 than the 270 so that may be why some people think it’s off. I just saw a video on youtube show how to use the log log scales to calculate interest. It’s neat because you can just lookup when it will double or triples. You can put the number of times it compounds per year as well. It’s much easier than typing in the compounding formula on a scientific calculator and gives a ton of results with one setting. Of course you can use them for other power and exponent calculations as well.
New England Senior Male
Reviewed in the United States on October 12, 2023
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.
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