This is a file to make it easier to interpret the X-axis and Y-axis calibrations

Print this file with the first extruder ---- Offset_X_Y_dual_extruder_1. stl

Print this file with the second extruder ---- Offset_X_Y_dual_extruder_2. stl

Read the offset value:

Value scale

In this image you can see the value of each line (0.1*value)

Example 1

In the first example extruder 2 is perfectly aligned with extruder 1 in the X and Y axis

Example 2

In the second example extruder 2 is offset -0.3mm in X and -0.2mm in Y

Example 3

In the third example extruder 2 is offset 0.6 mm in X and -0.2mm in Y