§ Secure the draft shield by pressing lightly on 
the draft shield base and moving the sliding lock
device to the left
§ Place components inside the chamber in the 
following order:
– Base plate
– Shield ring
– Pan support
– Weighing pan
– Gem tray (GCA scales only)
§ Place components inside the chamber in the 
following order:
– Base plate
– Centering plate
– Shield ring
– Pan support
– Weighing pan
7
Round weighing pan shape
Triangular weighing pan shape