are parallel and the see through opening 6 is centered over the point 3 the indicator 5 is now rotated into position and aligned to coincide with the trend line 2 from the point of intersection between the centerline of the indicator 5 and the half circle 6 a point is established this circle 6 has a radius equal to the space of three quarters if the prediction is to cover three quarters of a year into the future a horizontal line from point 7 is drawn to the price scale 10 on the left side of stock chart 1 in fig2 showing a predicted increase in stock price over the next three quarters from the present 9 00 to an anticipated 14 50 this is a increase of 50 percent the intersection point 7 is also projected to the percentage scale 9 of the calculator fig4 which confirms that the anticipated price increase is 50 percent a circular opening 11 in the indicator 5 and a segmental arcuate slot 12 in calculator body 4 having a common radius and origin point provides visibility in lining up the centerline of 5 with the trend line 2 terms such as 34 left 34 34 right 34 34 up 34 34 down 34 34 bottom 34 34 top 34 and the like are applicable to the embodiment shown and described in conjunction with the drawing these terms are merely for the purposes of description and do not necessarily apply to the position in which the stock.