142 Rotation Plate “142 Rotation Plate” has been added to your cart. View Cart Look inside Details Add To Cart Preview Buy (A$2.90) 142 Rotation Plate The Rotation Plate for Altered Scale 142 as found in our eBooks. The COMK Cycle of Movable Keys for music improvisation and composition. 1 pages Post navigationPrevious post: 141 Rotation PlateNext post: 143 Rotation Plate