10. Please refer to the attached sextant figure, the part that marked 「E」is:
(A) Index arm
(B) Micrometer drum
(C) Release lever
(D) Limb
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統計: A(583), B(54), C(80), D(119), E(0) #1973638
統計: A(583), B(54), C(80), D(119), E(0) #1973638