Orthogonal_Axis_Compensation

I am looking do my Orthogonal Axis Compensation but the link that I have doesn't seem to work anymore...
Orthogonal_Axis_Compensation
Anyone knows where I could download the file to be printed?Thanks

Here are the files but for the life of me I couldn't figure out how to use them.
https://github.com/reprappro/RepRapFirmware/tree/master/STLFor XY what I did (just this morning in fact), is create a right triangle with 2 sides 300mm long. That should make the hypotenuse 424.264mm.
x_length = 300 y_length = 300 x_squared = (300 ** 2) = 90000 y_squared = (300 ** 2) = 90000 c_squared = x_squared + y_squared = 180000 c_length = sqrt(180000) = 424.26
When I printed it, the sides were exactly 300mm but the hypotenuse was only 421.5mm.
actual_c_squared = 421.5 ** 2 = 177662.5 adjusted_x_squared = y_squared  actual_c_squared = 87662.25 adjusted_x_length = sqrt(adjusted_x_squared) = 296.07 M556_x_adjustment = adjusted_x_length  x_length = 3.93 M556 S300 X3.93
I then reprinted the triangle and got 424.5 and called it a day.

A mirror of the original RepraPro Duet calibration page is available here:
http://reprappro.cheeseandham.me.uk/reprappro.com/documentation/commissioningintroduction/calibrationduet/index.html 
Perfect,
Thanks to both of you, have a great day!