Hitech placed a ruler for all things in the game. Pull up the offline target and set it to 2000yds. Set the T34\85 reticle against it and count rings. Then do everything below and substitute those Mil values into the Zeiss optics write up.
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Target ring width - 10ft
Width of large center triangle base - 50ft
Height of large center triangle - 25ft
Width between vertical tick lines - 50ft
Height of vertical thick lines - 7ft
Width of small triangle base - 25ft
Height of small triangle - 12.5ft
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S - size in inches
D - distance in inches
S\D = Mil\1000
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2000yd = 72000in
50ft = 600in
25ft = 300in
12.5ft = 150in
7ft = 84in
Width Large Triangle | Width between Vertical Tick Lines50ft
600\72000 = Mil\1000
8.3 = Mil
Height Large Triangle | Width Small Triangle25ft
300\72000 = Mil\1000
4.1 = Mil
Height Small Triangle12.5ft
150\72000 = Mil\1000
2.08 = Mil
Height Vertical Tick Lines7ft
84\72000 = Mil\1000
1.1 = Mil
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T34\85 reticle at 2000 yards.