Every tool is used for a certain purpose and it can differ from being a device or a process depending on what purpose it is used whether to create something or achieve something that may not be seen.
There is practically a wide range of variety of tools being used today. Depending on the task, several tools can be used simultaneously for better assistance. The development of tools in the market today is specifically designed to meet the growing demands for better and easier solutions to the human enterprise.
Wedge-shaped tools that are used to slice or cut along a surface are called cutrent{clels. The edges of these cutting tools need to be sharp in order to cut smoothly and simply so regular sharpening of these tools is necessary if one wants to use it many times for a longer time. Examples of these cutting tools include the knife and scissors.
There is also what is called as measuring tools that differ depending on the quantity that is measured. Rulers and meter sticks are measuring tools in which the quantity being measured is length or distance. Measuring cups and test tubes are also measuring tools in which the quantity being measured is substance or liquid volume. The clock is also a measuring tool that measures time as the quantity. There is a long list of measuring tools and the ones mentioned are just few of them.
Tools that are used to mold the shapes and sizes of a material are called shaping tools. A baking pan is used to form the shape of a baked cake or the likes. A potter uses a mould to form the shape of his ceramics and the likes.
There are tools that help in moving objects. These are called moving tools. The basic principle behind this concept is the application of minimal force on the tool such that it will be able to apply a much greater force on another object based on fundamental properties of physics such as leverage. These tools include wrenches, pliers, for smaller objects and trucks, cranes, and planes for heavier ones.
There are also information tools that help people control and organize data such as the computer and computer applications and programs. There are also fastening tools that make things stay in place and compacted such as welders and nail guns.
In buying tools, a few things should be considered. Of course the tool that is going to be bought should be in a working condition to be able to do its function effectively. Every tool especially those that are going to be used daily should have high quality even if it would mean that it is more expensive. Tools that are bought cheap may not last for a long time. One should be aware about warranties when buying so that he would not have to worry about spending again if he gets a defective tool or the tool becomes defective in the long run.
Most importantly, the user must know how to use the tools appropriately for effectiveness and safety.