A&D BM series Instruction Manual page 13

Assembling the parts in the weighing chamber
Leveling
foot
Bubble spirit level
3 If the separation plate is not necessary, remove the
screw and take the plate off. Refer to "3.1.2.
Removing and attaching the separation plate".
4 Adjust the level of the balance using the leveling feet.
(Refer to "Adjusting the Level" on page 14.)
5 Confirm that the AC adapter type is correct for your local
voltage and power receptacle type.
6 Connect the specified AC adapter to the balance. Warm
up the balance for at least one hour with nothing on the
weighing pan.
BM series
BM-252, BM-500,
BM-300, BM-200
BM-20, BM-22
Screw
Hook
11
BM-252
Separation plate