Bar scales are graphical representations of distance shown as lines marked off in real-world units, like kilometers or miles.
Imagine you're baking a cake and you have a measuring cup. The lines on the cup that show where to fill for one cup, half a cup, etc., are like the marks on a bar scale - they represent different amounts of something (in this case distance).
Scale Bar: Another term for bar scales; it's essentially a line marked with distances that correspond to actual distances on the ground.
Linear Scale: This is another name for bar scales or scale bars. It refers to the same concept of representing distance graphically.
Fractional Scale: This is similar to representative fraction (RF), expressing the ratio of map distance to ground distance as a simple fraction or ratio.
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