C1 — TOP
Face A, as arriving. OR face, radius, seal groove.
IDLE
NG: 0
C2 — TOP
Face B, after the flip. Cage, rivets, prongs.
IDLE
NG: 0
C3 — SIDE
Periphery during 360° spin. Grinding marks.
IDLE
NG: 0
C4 — BORE
Fixed side-view borescope. The lift raises the bore around it.
IDLE
NG: 0