With 'Measure Increasing' you can place blocks on linear elements with an increasing distance and/or scale. You can define a start value and an end value or you can define a start value and an increment. If you are using an increment every next block on the linear entity will be that much bigger. So for instance if your start scale is 1.0 and your increment is 0.5 the blocks will be scale 1.0 1.5 2.0 2.5 3.0 and so on. When you define an end scale and there are six blocks placed the scales will be 1.0 1.2 1.4 1.6 1.8 and 2.0. If there are only five blocks the scales will be 1.00 1.25 1.50 1.75 and 2.00. You can do the same with the distance.