A.29.8540m;-0.4mm B.29.8540m;+0.4mm C.29.8536m;-0.4mm D.29.8536m;+0.4mm
A.1/2047 B.1/2046 C.1/2045 D.1/2044
A.–2.45mm B.+2.45mm C.–1.45mm D.+1.45mm