Scouring Sandstone

200 21 x 0.002 = 40.042

0.002

151 8 x 0.002 = 30.216

0.002

150 59 x 0.002 = 30.118

0.002

147 37 x 0.002 = 29.474

0.002

141 36 x 0.002 = 28.272

0.002

134 9 x 0.002 = 26.818

0.002

131 64 x 0.002 = 26.328

0.002

121 94 x 0.002 = 24.388

0.002

121 38 x 0.002 = 24.276

0.002

116 42 x 0.002 = 23.284

0.002

x 0.08 = 0

0.08