Ruler refers to the layout of the pages of a notebook. It differs depending on the purpose.
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Plain. Plain notebooks have blank pages. This is useful primarily for free sketches and other works of fine art, where extra elements only get worse.
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Grid. Notebooks with a grid layout, like school notebooks. Well suited for working with numerical information, solving mathematical exercises, creating tables, drawing graphs and charts.
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Ruled. Ruled notebooks will be useful for operating with textual information — from key moments at a meeting or press conference to poems and prose of your own composition, sudden ideas, etc.
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Dot grid. The dots with this layout are arranged so that they form squares that imitate a grid. Something similar happens if, on a page with a grid of lines, put a dot at each intersection of the lines, and then somehow remove the lines, leaving only dots. These notebooks are indispensable for technical projects where you often have to deal with straight lines and angles: dots provide a very convenient base for drawing. At the same time, the finished drawing has a minimum of unnecessary elements, because many (if not all) of the points end up covered by the pattern.
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Combined. Notebooks consisting of several parts with different types of
...layout: for example, one half is folded from blank sheets, and the second is marked with a ruler. This provides versatility: one notebook can be used for different purposes.
— Hobby. Layout optimized for use in a specific area of human activity. These products include notebooks for storing recipes, cataloging books or films, records of food and drink tastings, options for dog lovers, cats, other pets, for adherents of a healthy lifestyle, and much more. Usually, models with a “hobby” layout have several specialized sections, and the variety of markup even in one notebook is very large.— Cardboard. A kind of paper that differs from the regular paper in greater thickness and, accordingly, rigidity. The main advantages of cardboard are ease of production and low cost. At the same time, its protective properties are quite modest: for example, water resistance is usually out of view, and stains from various liquids (for example, tea) instantly appear on such a cover. In addition, after bending, a characteristic wrinkle remains on the straightened cardboard, spoiling the appearance. As a result, this material is used relatively rarely and mainly in the simplest versions of notebooks.
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Leather. A very advanced material that combines good protective properties and stylish appearance — thanks to that, a leather notebook can also play the role of a fashion accessory. Leather covers are available in various colours and textures (smooth leather, suede). As for the protective properties, it is worth mentioning water resistance and temperature extremes. At the same time, this material is sensitive to scratches and rather demanding to care for: you need to occasionally treat it with protective agents and follow special conditions for cleaning and drying. If not, deformations and cracks are possible, spoiling the appearance of the product. And the cost of the skin is quite high.
— Ecopolymer. In terms of practical specs, this material is a type of plastic; the word "eco" in the name indicates the safety for the env
...ironment claimed by the manufacturer. The ecopolymer is durable enough, moisture resistant, easily cleaned of dirt, it can be given almost any colour, and this material is inexpensive. Among the cons can be noted the predisposition to scratches.
— Metal. If we talk about notebook covers, then metal can be attributed to exclusive materials. It is durable, resistant to moisture, temperature extremes and dirt, practically does not bend, while giving the product a stylish original appearance. At the same time, the use of such notebooks is associated with a number of inconveniences. For example, the edge of the cover, if handled carelessly, can easily scratch the furniture, and the cover itself often creates unnecessary noise (this is especially unpleasant on glass surfaces). Because of this some other reasons, this option is very rare.
