With the DC switch set to its "AC" position and the AC switch set to "DC", no current can flow through the instrument. However whenever any moving coil instrument is likely to be subjected to heavy shock in transit, it is good practice to damp the movement by short circuiting the moving coil using a heavy gauge wire connected across the terminals.
When the DC switch is set to "AC" and the AC switch is set to "DC", no current flows through the instrument. However, if a moving coil instrument might be subjected to heavy shock during transport, it's best practice to dampen its movement by short-circuiting the coil using a thick wire connected across the terminals.