Types of squares
The large number of areas that use this tool has led to the emergence of a wide variety of models. They all differ in functionality and purpose.
Among the most popular are the angles:
- Drawing purpose. The simplest and most common type, which is made in the shape of triangles with angles of thirty, forty-five, sixty and ninety degrees. They are also marked with measuring lines, which allows you to measure small straight lines. Traditionally, such devices are used in schools for geometry or drawing subjects, since they can easily be used to construct straight or oblique lines.
- Verification type. It is used for checking perpendicularities and is popular among engineers. With the help of such a tool, precise structures are checked, the assembly of which requires increased attention. The appearance of the verification models consists of two rulers, which are connected at angles of ninety degrees. These squares are very versatile, so there are no restrictions on areas of use.
- Joiner's model. They are in great demand in furniture production, as they measure right angles very accurately. Often, carpenters use ordinary, marking types and Svenson squares. The designs of such devices are much more complex than conventional ones and contain not only a triangle, but also protractors, marking thicknessers and rulers. It is important to understand that such models are not entirely suitable for domestic purposes, because only a specialist can understand them and use them correctly.
- Construction variety. It is worth noting that builders use a wide variety of models of such devices. Here it becomes necessary to measure tile corners, mark drywall and wooden boards. Only squares for masons have exceptional differences. They are very bulky and therefore not in demand in other professions.
Description
There are several types of squares depending on the application:
- UP - flat angles. Squares with metal flat plates differ in width and thickness. Used for all types of construction. A mechanic, carpenter, milling machine operator, or turner cannot do without such a tool.
- УШ - the corner has a wide base. One side consists of a T-shaped profile, the other is flat, they are connected to each other at a right angle.
- ULP - pattern testing squares. They are used for precise measurement of finished products, parts, and structures. Accurate measurement in ultrasonic testing
Wooden and plastic are suitable only for carpentry work.
New angles on the market
Modern conditions of work require the development and production of some special angles.
The following instruments are called improved and modified:
- With liquids for measuring levels. It is very suitable for builders, because it provides the opportunity to measure the level and immediately apply the appropriate markings.
- With malka device. A design tool that is capable of measuring angles and putting them in the same position on diagrams or drawings.
- With magnets. Welding jobs often require certain elements to be fixed, and special magnetic clamps have been manufactured to maintain certain angles.
In general, you have a huge selection of models from conventional to more accurate and modern ones, with advanced functionality.
Criterias of choice
When purchasing a tool, you need to take into account its basic technical parameters.
Manufacturer
The guarantee of accuracy and durability of the square is the purchase of a quality tool. You can choose this option when considering models from well-known brands:
- Matrix;
- Anchor;
- STAYER;
- BISON;
- Vortex;
- KRAFTOOL;
- FIT;
Lenght and width
The dimensions of the square elements may be different. The most accurate measurements are taken using a tool with long sides. For home use, 150-300 mm is sufficient. To perform different types of work, it is better to choose a device up to 600 mm. Models up to 1000-1720 mm are more suitable for professionals.
The range of indicators for the long side is 90-1720 mm, the short side is 25-1220 mm.
Design Features
Any square has a right angle. By improving the classic version, the following modifications were developed:
- folding tool;
- with a protractor;
- with level;
- with double-sided markings.
One model can combine the functions of a ruler, surface thicknesser, leveler, screed, level and other devices.
Material
Meters are available in aluminum, steel, stainless steel, and with a cast iron base. The last two types are characterized by high strength. Aluminum has low rigidity, which can increase the percentage of errors when applying markings. Modern aluminum models do not have this drawback due to the use of extruded profiled material.
Goniometer Kraftool 34290
Scale
Scale divisions can be applied to the instrument ruler. Most often one of the options is used:
- metric (numbers are ranked by rank, separated by intervals, the strict position of the zero point is determined, quantities have absolute values);
- inch.
There are also models with a double scale. The markings in them are applied to different edges of the ruler.
Accuracy class
Meters are assigned a certain accuracy class. The classification includes three classes: 0; 1.0; 2.0. The zero class is considered the most accurate.
Folded length
When purchasing a folding design, you need to consider the length of the tool when folded. This will make transportation easier. It is also worth paying attention to the quality of fixation of the rulers. The slightest play distorts the data.
The length range of the large side is represented by values from 60 mm to 1600 mm. Folding models, as a rule, can be reduced in size by half.
Weight
The unit of measurement is grams. The lighter the tool, the more convenient it is to work with it. However, not all lightweight materials are characterized by high rigidity and durability. Any deformations provoke errors in marking. Therefore, when choosing a model, you need to take into account not only weight, but also rigidity.
The weight of the device depends on the material from which it is made. Plastic and aluminum products are considered lightweight.
Where is the square used?
For a deeper understanding of the designs and purpose of these devices, it is necessary to study the list of activities where their use is necessary.
This list included:
- Laying paving and floor types of tile materials.
- Cutting aerated concrete block.
- Control and marking of parts of the assembled structure, as well as control of the corners of processed parts.
- Fastening metal material and its components during assemblies, soldering and welding.
- Construction and erection of metal structures.
- Control over the even laying of brick walls.
- Development and creation of drawing materials.
- Lots of other areas.
Due to their high efficiency, these devices quickly acquired new types, which made it possible to use them in certain areas of construction and engineering.
Flat structures and their scope
Measuring devices are manufactured in different modifications. They are divided according to the method of application:
There are devices on sale made in the form of an isosceles triangle. One corner of the device must be straight. The design is highly durable. This has a positive effect on the accuracy of measurements. They cost more than conventional devices. However, the accuracy class compensates for the costs.
How to choose the right angle
The unlimited choice of tools for measuring angles can be misleading and lead to the incorrect selection of a low-quality tool.
At the moment, there are several parameters by which you need to make a choice.
Among them:
- Manufacturing materials. When choosing a device, you can find steel, wooden, aluminum and plastic models.
- Purpose. One of the most important criteria, because some angles simply cannot be used in everyday activities.
- Functional and design features. Some specialties require special types of tools.
- Dimensions. To operate small items, you do not need to purchase huge varieties.
- Mass indicators. Not a very important criterion, which sometimes still needs to be taken into account. Heavy models will not deform, and light ones are easier to use.
Verification products
They produce 5 types of devices intended for verification. With their help, you can control perpendiculars on workpieces in different areas. Manufacturers offer a wide range of devices with different sizes and purposes.
For home use, people usually purchase simple corners made from a flat profile. There are 3 types of such devices. They should be studied carefully. Knowing all the designs of flat tools, it will be much easier for anyone to make a choice in favor of a specific model.
Which manufacturer to choose
Considering that such devices are used for precise calculations, errors are unacceptable. Therefore, it is very important to understand which brands are conscientious in their production.
Among those tested are:
- Italian company IDF.
- American brand Stanley.
- Chinese concern Matrix.
- Chinese manufacturer Sparta.
- Mexican brand Trooper.
- Russian company CRAFT.
- Chinese Powers Start.
- Russian manufacturer Scrub.
- German manufacturer WolfKraft.
You can see that there are serious manufacturing companies on the market. That's why you have a wide choice of both models and brands.
