sql server - How to check used count of decimal places in the field

select prodid, remaininventphysical,
len(replace( rtrim( replace( 
  convert( varchar, remaininventphysical), '0', ' ' ) ), ' ', '0' ) ) - 
charindex( '.', replace( rtrim( replace( 
  convert( varchar, remaininventphysical ), '0', ' ' ) ), ' ', '0' ) )
as nonzerodecimalplacesused
from PRODBOM
order by prodid;

Output:

prodid               remaininventphysical                    nonzerodecimalplacesused
-------------------- --------------------------------------- ------------------------
24-015377            0.0600060006000600                      14
24-015376            0.0800000000000000                      2
24-014563            0.0450045004500450                      15
24-013446            0.0450045004500450                      15
24-013445            0.0000000000000000                      0
24-011934            0.0000000000000000                      0
24-008828            0.0000000000000000                      0
24-008602            0.0000000000000000                      0
24-006598            0.0000000000000000                      0
23-039521            0.0000000000000000                      0