There are many shorter lines between the main scales, and those are used to divide it, for inch ruler, in the middle of the mark of 1 inch and 2 inches, that line is 1/2 inch, half of inch, counting from 0, that is 1 1/2 inches.įor cm ruler, in the middle of the mark of 1 cm and 2 cm, that line is 0.5 cm, half of cm, which is also 5 mm. anonymous (21' monitor) 2mm to small on 21' crt. Example: I have a 21' crt but there is a Black box on the outside of where my screen starts to work. for inch ruler, If the line is marked 2, it is length of 2 inches, for cm ruler, If the line is marked 5, it is the length of 5 cm. you have to enter the actual viewable portion of your monitor not the whole size. However, yardsticks measure three feet (36 inches), and meter sticks measure one meter (100 cm). The standard length for most rulers is 12 inches (or 30 centimeters), excluding the slight margins on either end of the ruler. There are many lines and number marks on the ruler, zero is the start mark, put a ruler on the object, or vice versa, put an object on the ruler, you have to aligin the line of zero to the end of your object, then look at the other end of the object, on wihic line it is aligned, that is the lenght. The size of a ruler can vary depending on its intended use and the measurement system it employs. Most countries in the world use metric lengths, except for a few contries, such as the United States, which still use imperial lengths.
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