Scale division and resolution

 

The picture shows a whole series of lines that are diving up a scale. The lines on a ruler that divide up the readings are called SCALE DIVISIONS. One gap tells you the smallest possible non-zero reading you can take. This is called the RESOLUTION. On the ruler, the scale divisions are 1mm apart on the left hand side, so the resolution is 1mm on the left hand side. On the right hand side, the scale divisions are 1cm apart so the resolution is 1cm. The scale on the wall also has a resolution of 1cm.