| Description | Type | Default | 
|---|---|---|
|  
				   Used to specify scale factors for the total mass matrix. The total mass matrix is given by: 
 where [M2] is selected via the Case Control command M2GG and [M1] is generated from mass element entries in the Bulk Data. These parameters are effective only if M2GG is selected in the Case Control.  | 
 
				   Real  | 
 
				   1.0  |